Miracle-dz/UniFAR-FTUs huggingface dataset:
Spectral proper orthogonal decomposition and resolvent analysis of near-wall coherent structures in turbulent pipe flows

Abstract Direct numerical simulations, performed with a high-order spectral-element method, are used to study coherent structures in turbulent pipe flow at friction Reynolds numbers $Re_{\tau } = 180$ and $550$. The database was analysed using spectral proper orthogonal decomposition (SPOD) to identify energetically dominant coherent structures, most of which turn out to be streaks and quasi-streamwise vortices. To understand how such structures can be modelled, the linear flow responses to harmonic forcing were computed using the singular value decomposition of the resolvent operator, using the mean field as a base flow. The SPOD and resolvent analysis were calculated for several combinations of frequencies and wavenumbers, allowing the mapping out of similarities between SPOD modes and optimal responses for a wide range of relevant scales in turbulent pipe flows. In order to explore physical reasons behind the agreement between both methods, an indicator of lift-up mechanism in the resolvent analysis was introduced, activated when optimal forcing is dominated by the wall-normal and azimuthal components, and associated response corresponds to streaks of streamwise velocity. Good agreement between leading SPOD and resolvent modes is observed in a large region of parameter space. In this region, a significant gain separation is found in resolvent analysis, which may be attributed to the strong amplification associated with the lift-up mechanism, here understood as nonlinear forcing terms leading to the appearance of streamwise vortices, which in turn form high-amplitude streaks. For both Reynolds numbers, the observed concordances were generally for structures with large energy in the buffer layer. The results highlight resolvent analysis as a pertinent reduced-order model for coherent structures in wall-bounded turbulence, particularly for streamwise elongated structures corresponding to near-wall streamwise vortices and streaks.
Safety and Local Efficacy of Laser Ablation for the Extrahepatic Metastasis of Hepatocellular Carcinoma: An Available Treatment Strategy

Thermal ablation plays an important role in the treatment of extrahepatic metastasis of hepatocellular carcinoma (HCC). Yet laser ablation (LA), as a safe thermal ablative modality, is less investigated in this field. In this study, the safety and local effectiveness of LA in the treatment for the extrahepatic metastasis of HCC were evaluated. From May 2012 to May 2019, 17 patients (13 males and 4 females; mean age, 54.1 ± 14.6 years; age range, 34–80 years), who underwent LA for treatment of extrahepatic metastasis of HCC at the First Affiliated Hospital of Sun Yat-sen University, were retrospectively enrolled in this study. Local effectiveness, complications, local tumor progression (LTP), and overall survival (OS) were evaluated. Finally, a total of 28 LA treated extrahepatic metastatic lesions of HCC were reviewed. Neither LA-related mortality nor major complication occurred. Complete ablation (CA) was achieved in 20 out of 28 lesions (71.4%). During the follow-up (mean, 19.5 ± 12.8 months; range, 5–42.7 months), LTP developed in 4 out of 20 lesions with CA (20%). Four patients died of tumor progression or multiple organ dysfunction syndrome. The accumulative one- and three-year OS rates were 79.0% and 65.8%, respectively. In conclusion, LA is a safe and effective therapeutic option in the treatment of extrahepatic metastasis of HCC. Further studies are necessary to evaluate the benefit of LA.
Structural Transformation and Gendered Transitions to Adulthood among Rural Youth: Cross-National Evidence from Low- and Middle-Income Countries

Abstract Using frameworks on gendered transitions to adulthood, we analyse nationally-representative, sex-disaggregated data from 36 countries to examine how structural transformation (share of GDP from non-agriculture) and rural transformation (agricultural value added per worker) are associated with landownership, labour force participation, and sector of employment for rural young women and men. Transformation has different implications for young men’s and women’s transition to adulthood. Higher levels of structural transformation are associated with a higher likelihood of landownership for young men, but not young women. Structural transformation is associated with lower employment of young rural men and women alike but is positively associated with on-farm employment of young women. Rural transformation is associated with a higher probability of employment for young rural men, but not women. Instead, rural transformation is negatively associated with young women’s on-farm work and positively associated with not being in education, employment, or training. Whereas domestic responsibilities affect young women’s livelihoods more than young men’s, recognising the importance of both productive and reproductive roles in young women’s and men’s lives is needed to support the transition to adulthood at different levels of structural and rural transformation.
Identifying Factors Influencing Pre-Service Teacher Readiness to Use Technology During Professional Practice

Pre-service teachers should be taught how to use technology so that they are equipped to use the knowledge and skills acquired in their professional practice. However, studies have shown that pre-service teachers are not adequately prepared to teach with technology. Therefore, the purpose of this study is to explore pre-service teachers' perspectives on factors that impact on their readiness to teach with technology. The TPACK and UTAUT2 models are used as frameworks. This is a qualitative study in which 16 pre-service teachers were involved in two focus group discussions, and the data obtained are deductively analysed. From the findings, a number of factors enabled and hindered teacher readiness to use technology. These factors include projects and workshops on technology, resources, and teacher-educators and mentor-teachers in schools modelling the use of technology. The study highlights the importance of consistent and effective modelling on the use of technology by teacher educators and mentor teachers in the schools in order to equip pre-service teachers to effectively teach with technology during professional practice.
Investigation of the optical beam shifts for monolayer MoS2 using polarimetric technique

The spatial and angular Goos-Hänchen (GH) and Imbert-Fedorov (IF) shifts are examined for fundamental Gaussian beam (633 nm) reflected from a monolayer of MoS2 using the ‘Stokes polarimetric’ technique. This technique enables us to promptly determine the magnitudes of the reflection coefficients and their relative phase differences which gives the optical beam shifts. The GH and IF shifts are measured with different polarization basis along with varying angle of incidence. This is a precision technique depending only upon the polarization components of the light beam and is quite independent of the fluctuations of the light intensity. The response of GH and IF shifts for MoS2 substrate is significant and thus may open up new possibilities in the optical applications of 2D materials.
Fabrication of Silver- and Zinc-Doped Hydroxyapatite Coatings for Enhancing Antimicrobial Effect

This study develops, for the first time, composite coatings based on silver and zinc doped hydroxyapatite in chitosan matrix (AgZnHApCs). The AgZnHApCs composite coatings were prepared by dip coating method. The hydroxyapatite (HAp), biocompatible material for regenerating and strengthening damaged bones were doped with silver and zinc ions and coated with chitosan in order to produce a uniform and homogenous coating with biocompatibility and antimicrobial properties. The stability of AgZnHApCs suspensions was evaluated by ultrasound measurements. The value of stability parameters of AgZnHApCs suspension is in good agreement with the value of bidistilled water used as reference fluid. Homogeneously dispersed solutions of AgZnHApCs were synthesized to endeavor to optimize the physico-chemical and biological characteristics of the coatings obtained at room temperature. The AgZnHApCs composite suspension and coatings were analyzed using various investigation techniques, such as X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenylte-2H-tetrazolium bromide) assay and antimicrobial studies. The optical spectroscopy, atomic force microscopy (AFM), metallographic examination and X-ray photoelectron spectroscopy (XPS) on AgZnHApCs composite coatings were also conducted. Cell culture and MTT assays demonstrate that AgZnHApCs composite suspension and coatings have no negative effect on the cell viability and proliferation. The cell morphology was not affected in presence of AgZnHApCs composite suspension and coatings. The antimicrobial assays conducted against Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922, and Candida albicans ATCC 90029 microbial strains revealed that both the AgZnHApCs composite suspension and coatings exhibited great antimicrobial properties.
Factors Influencing Online Repurchase Through Satisfaction

Article Info Abstract This research examines the influence of price fairness and product quality on satisfaction and repurchase on Tokopedia. This is a quantitative research that used Structural Equation Model (SEM) with SPSS and Lisrel software for data analysis. Purposive sampling is used to select samples, though it is limited to certain respondents. The minimum sampling size is 10 times the number of research indicators, with a total 149 respondents analyzed. Findings. The results showed that Price Fairness and Product Quality had significant and positive impacts on satisfaction. Furthermore, Product Quality and Satisfaction have significant and positive effect on repurchase, while Satisfaction mediates price fairness to Repurchase and Product Quality.
Freshwater mussels of the Velika Morava River

The aim of this paper is to present the records and relative abundance of freshwater mussels (order Unionoida) along the Velika Morava River. The objective is to contribute to the general knowledge about the distribution of the species. This information is necessary to design more effective assessment of ecological status, as well as to identify the level of endangerment and to set up a prioritisation in protection on the national level. During the investigation five species of mussels were recorded. The most abundant and frequent species was found to be Chinese Pond mussel Sinanodonta woodiana (Lea, 1834), followed by Unio crassus, Philipson, 1788. The records of abundant population of U. crassus is of special interest as the species is assessed as endangered at the European and national level.
What drives university engineering students to become entrepreneurs? Finding different recipes using a configuration approach

ABSTRACT This research aims to investigate how combinations of factors lead to the entrepreneurial intention and propensity of engineering university students. The study proposes the application of a configuration approach (Qualitative Comparative Analysis) with a sample of 10,008 engineering students from 43 universities in 10 European countries. The findings show that entrepreneurial intention and propensity do not depend only on a single driver but on the interplay of multiple factors. The intensity of entrepreneurship education is a necessary but not sufficient condition. Different recipes brought to light in the analysis belong to similar socioeconomic contexts.
The Consumption of Pornography Scale – General (COPS – G)

Abstract Pornography is widely used, distributed, and researched. Nevertheless, few psychometric scales have yet to be developed that assesses this complex construct without pathologizing the behavior or labeling the behavior as problematic. The current study sought to develop a 34-item, purely behavioral and topographic measure of pornography consumption without assigning value to the behavior. In the current study (N = 317), we examine the overarching factor structure and provide initial evidence for the scale’s psychometric characteristics. In line with our hypotheses, we found a bifactor model with one general factor and four subfactors fit the data best; the scale was reliable, and scores were stable over time. Further, the current study provides initial evidence for the scale’s convergent validity in its relation to sexual sensation seeking, excessive pornography use, and gender as well as evidence for divergent validity by possessing small correlations with depressive symptoms and sexual satisfaction. Finally, the current study also provides initial evidence for the scale’s incremental validity and discusses limitations and ideas for future research.
The Development of News Based Bioconservation Teaching Material Supplements to Embedding Environmental Awareness

Teaching material supplement of News based bioconservation is compiled based on environmental news in the newspapaer in North Maluku. This study has purpose to identify the feasibility, readability and effectiveness of the news based bioconservation teaching material supplements. This study applied a Research and Development (R&D) approach. The subjects in this study were the fifth grade students of SD Inpres Aru Irian and SD BPD Falila, Morotai Island Regency. The data collection technique was carried out using expert validation questionnaires, student response questionnaires and cognitive tests. The data obtained by expert validation showed a score of 90.79%, indicated that the news based bioconservation teaching material supplement was very suitable to be used in the learning. The effectiveness of teaching material supplements was determined based on the classical completeness and N-gain values. The classical completeness of students in the pretest test was 29%, meanwhile, in the posttest test was 86%. Based on the classical completeness requirements ≥80%, indicated that students completed classically. The N-gain test obtained was 0.75 with high criteria or classified g ≥ 0.7, it was concluded that the teaching material supplement of news based bioconservation teaching was effective in improving student learning outcomes. The understanding of environmental awareness was obtained using an environmental awareness questionnaire, the criteria obtained were high with a mean score of 73.88%. Based on the result of the study, then, it can be concluded that teaching material supplement of news based bioconservation is appropriate to be used as teaching materials in the learning and effectively embedding the student learning outcomes and the understanding of environmental awareness.
The Relationship of Macro-risk Indicators, Internal Factors, and Risk Profile of Islamic Banking in Indonesia

This study is essential because Islamic banks have a higher NPF level than conventional banks and examine whether macroeconomic indicators (macro-risk), internal factors of banking (GCG-earnings-capital) risk profile correlate term Indonesian Islamic banking. The method used is the correlation analysis involving four macro-risk variables (Forex; BI rate; Inflation and GDP), three GEC variables (GCG; ROA, and CAR), and two risk profiles (FDR and NPF). The number of samples is the ten largest Indonesia sharia commercial banks with the 2011-2018 periods. This research finds that macroeconomic indicators positively correlate to non-performing financing (NPF). The GEC positively correlates to NPF and FDR; GEC is negatively correlated to macro-risk indicators. However, some indicators are negatively correlated, such as GDP-corporate governance, Forex-profitability, GDP-efficiency, BI ratecapital, and profitability-NPF. The study proposed managerial implications to understand the relationship between macroeconomic, internal factors, and risk profile in Islamic bank lending.
International Public Sector Accounting Standards and Quality of Financial Reporting in the Public Sector of Pakistan: Moderating Role of Accounting Information System

Strengthening governmental accountability is a crucial consequence of governmental policies which could enhance the quality of reporting. International public sector accounting standards have been perceived as a step towards enhancing quality reporting of state owned entities. The study investigated the impact of transparency, financial statement disclosure and comparability on the quality of financial reporting in state owned administration in Pakistan. Also, the study employed the use of accounting information system as a moderator to assess the moderating effect of AIS. The research methodology is based on a questionnaire sent to state owned entities. Regression Analysis was employed to determine the relationship among the variables. The results indicate that comparability, financial statement disclosure and transparency are all positively and significantly associated with the quality of financial reporting, providing evidence of the impact of explanatory variables on the quality of reporting in Pakistan. The moderation results indicate that AIS positively and significantly moderates the relationship among transparency and quality of reporting and comparability and quality of reporting. Notwithstanding, AIS was found to have an insignificant moderating effect on the relationship of financial statement disclosure and quality of reporting. The finding of the study implies that government of Pakistan needs to adopt a more robust approach to improve quality of financial reporting.
Examining the impact of abusive supervision on employees’ psychological wellbeing and turnover intention: The mediating role of intrinsic motivation

Abstract The competitiveness and sustainability of employees in service and non-service-based organizations continue to trigger scholars’ interest to investigate the related factors. As per the review of literature, there are only a few studies have been conducted on abusive supervision and intrinsic motivation about employee psychological wellbeing and turnover intention. We applied the social exchange theory to abusive supervisors at the workplace. This study, therefore, explores the direct and indirect relationship between abusive supervision on subordinate psychological wellbeing and turnover in service-based organizations. This empirical study employs a quantitative research methodology to establish the mediating influence of intrinsic motivation between the underlying constructs. Out of 300 research questionnaires distributed to full-time employees working in service-based organizations in Pakistan, 225 responses were successful for analysis, and validation was conducted through partial least square structural equation modelling (PLS-SEM). The results of this study demonstrate that abusive supervision (AS) positively impacting on both psychological wellbeing (PWB) and turnover intentions (TI) of the employees. More importantly, intrinsic motivation (IM) is also positively and significantly mediate the relationship between AS and PWB, and AS and TI. The study provides substantial implications to managers and leaders by redesigning existing strategies to promote a feasible culture within the working environment for the employees to improve performance. The current study enhances existing literature on employee wellbeing and human resource management by integrating intrinsic motivation (IM) as a mediation model/concept. Limitations and future research directions have been discussed in the entire paper.
Efficiency of Dietary Turmeric on Growth Performance, Hematology and Survival Rate in Common Carp Cyprinus carpio Challenged with Flexibacter columnaris

The present study was carried out to assess the effect of turmeric (curcoma longa) supplemented diet on growth performance, hematology and survival rate of Cyprinus carpio L. against the pathogenic bacteria Flexibacter columnaris. For this purpose, 180 common carp were used, 60 fish were used to determine LD50 and 120 fish were weighed and randomly distributed into six treatments (two replications for each treatment). Fish groups were fed six dissimilar diets up to 45 days, the first group was fed with 0.25% turmeric, the second group was fed supplemented with 0.5% turmeric, the third group was supplemented with 0.75% turmeric, the forth group was fed with 1% turmeric, the fifth group was supplemented with 1.25 % turmeric and the sixth group was served as the control group fed basal diet without supplementing with turmeric. After 45 days of feeding trail all fish in experimental groups were challenged intramuscularly with 0.2 ml F. columnaris at a concentration of 120 × 106 CFU/ml. after 45 day of feeding trail and post challenge the different parameters were determined including: growth performance, hematological parameters (WBC and RBC count, Hb content and PCV value) and survival rate were also determined. The obtained results showed that T5 was the best treatment followed by T4, T3, T2 and T1 respectively, which revealed a significant increase (P≤0.05) in comparison with the control group in all growth performance parameters (final weight, daily gain, SGR(%), relative growth rate, FCR and FCE%). RBC, HB and PCV% after 45 and 60 days (pre and post challenged with F. columnaris) revealed significant differences (P<0.05) in all experimental groups relative to the control group. In conclusion, our findings indicate that turmeric powder has improved the growth rate in C. carpio when challenged with F. columnaris. Also, addition of turmeric t into commercial feeds increased survival rate of carp fish challenged with a bacterial pathogen. This will be worth and useful for application in fish aquaculture.
The Role of Exogenous Somatotropin, Ovariectomy and Extracellular Matrix in Bovine Mammary Gland Development

The highly regulated maturation of the mammary gland is poorly understood. Our studies were designed to further characterize the role of ovarian hormones, growth hormone (GH)/IGF axis proteins and extracellular matrix (ECM) in the growth and development of prepubertal mammary glands. Prepubertal heifers were injected with either exogenous GH or subjected to ovariectomy (OVX). Mammary parenchyma (PAR) and mammary fat pad (MFP) were harvested for DNA, protein, lipid, and western blot analysis. Remaining tissues were preserved for histological staining or snap frozen for quantitative real-time PCR. We examined 13 genes that work in conjunction with the extracellular matrix to regulate mammary proliferation and morphogenesis. Administration of GH, while impacting composition of MFP, had no effect on expression of the selected genes; there was a decrease in expression of fibronectin in PAR. Ovariectomy had no effect on gene expression in MFP but decreased expression of epimorphin, a potent regulator of morphogenesis, in PAR. In both experiments, the presence of a 55 kDa band corresponding to androgen converting enzyme aromatase was detected but its expression was unaffected. In another study, we used in vitro cell culture to evaluate the role of ECM in mammary gland maturation and employed quantitative real-time PCR to evaluate gene expression profiles of select genes involved in proliferation and differentiation. Expression of Rac1 was decreased in response to bovine insulin (BI) but increased on collagen I (Col). Expression of aldehyde dehydrogenase was decreased in BI and serum on plastic and on Col in the presence of BI. Expression of IGF binding proteins (BP) 3, -4, and -6 were decreased in the presence of serum on laminin (LM). Also, IGF-BP2 expression was decreased on Col while IGF-BP6 was increased on LM with BI. Clusterin, a ubiquitous non-adhesive ECM protein was not affected by ECM substrate but did increase over time. In conclusion, we propose that the mammary gland is not able to respond to GH at this age and that while OVX did effect the expression of some genes, the presence of aromatase maintained local estrogen concentrations. Furthermore, ECM alone is insufficient to regulate mammary gland development and growth.