Miracle-dz/UniFAR-FTUs huggingface dataset:
Overdense Threads in the Solar Corona Induced by Torsional Alfvén Waves

High-resolution and high-cadence observations have shown that Alfvén waves are ubiquitous in the solar atmosphere. Theoretical works suggest their ability to transfer large energy fluxes from the photosphere to the corona and solar wind. In this proof-of-concept Letter we show that torsional Alfvén waves can induce the formation of filamentary plasma structures in the solar corona. We perform high-resolution 3D ideal MHD simulations in an initially uniform coronal plasma permeated by a line-tied twisted magnetic field. We find that torsional Alfvén waves develop Kelvin–Helmholtz instabilities as a result of the phase mixing process. The Kelvin–Helmholtz instability drives plasma compression that breaks the uniformity of density, creating elongated overdense threads aligned with the direction of the magnetic field. With synthetic modeling of SDO/AIA imaging we show that the overdense filaments could be seen in observations as fine strands that illuminate the underlying magnetic structure.
Shear Strengthening of Reinforced Concrete Beams Using Fibre Reinforced Polymer: A Critical Review

The primary purpose of reinforcing bar stirrups in a reinforced concrete beam is to improve shear strength. The FRP system may significantly improve a concrete beam’s ultimate shear strength, serviceability, and ductility. The application of FRP for the repair and reinforcement of the structures has become very popular due to its low weight, high tensile strength, and simplicity of installation on uneven surfaces. FRP material outperforms other traditional materials in strengthening applications due to its high strength-to-weight and stiffness-to-weight ratios, resistance to corrosion, and ease of handling. The overall objective of this research is to investigate and improve the understanding of the recent research in the area of shear FRP strengthening of reinforced concrete beams. In this paper, recent publications were reviewed to see how different anchoring procedures, different factors that affect FRP performance and different failure scenarios affect the shear strengthening of concrete beams. The benefits and limits of FRP systems, as well as some current research trends are discussed in this project. From the research, it can be stated that type of anchorage technique and different parameter give a different impact to failure mode of the beam.
Modeling and experimental verification of doubly nonlinear magnet-coupled piezoelectric energy harvesting from ambient vibration

This paper presents a nonlinear doubly magnet-coupled energy harvesting system (DMEHS) which could exhibit co-bistable and monostable dynamic characteristics. Its various characteristic responses induced by the magnetic force can be conveniently obtained using the adjustable horizontal distance between two coupled harvesters in the DMEHS. In the case of appropriate relative positions, the DMEHS appears in a co-bistable structure which is different from the traditional bistable structure. Additionally, both the inclination angle of endmost magnets and the displacement perpendicular to the vibration direction are taken into account to calculate the nonlinear magnetic force in the nonlinear electromechanical equations. The numerical investigations show good agreement with experimental results with respect to the output voltage response. Each harvester without magnetic coupling is tested independently to compare with the DMEHS. Both numerical and experimental results also demonstrate the frequency bandwidth and performance enhancements by changing the horizontal distance between the two coupled harvesters.
Investigation of changes in field electron emission characteristics of industrial fine-grained graphite when operated in an argon atmosphere up to 10–2 Pa

Studying of field electron emission properties of carbon cathodes operating under technical vacuum conditions is a promising scientific field. Massive cathode made of commercial fine-grained graphite of MG (Russian abbreviation) grade is being investigated. Experiments on obtaining current-voltage characteristics and long-term testing are being carried out. The emitter made of fine-grained graphite demonstrates good emission properties under technical vacuum conditions. Carbon cathode is capable of operating at pressures up to 2×10–2 Pa. Increased pressure in the vacuum chamber leads to deterioration of cathode emission properties. Electric field enhancement factors were calculated for all stages of studies. Analysis of experimental data demonstrates decrease in enhancement factor due to ion bombardment of cathode surface during exploitation. This results in higher electric field for operation of investigated graphite cold cathodes.
The Causal Relationship of the Centralized Decision-Making and Workplace Mobbing With job Burnout Considering the Mediating Role of Organizational Silence

Introduction: Today, burnout has become a common organizational problem that covers all aspects of people's lives and has led to a reduction in labor and damage to the country's economy and production.The aim of current research was to investigate the causal relationship of the centralized decision-Making and workplace mobbing with job burnout considering mediating role of organizational silence. Material and Methods: The study was correlational research based on structural equation modeling. The statistical population of present study was all employees of management of repair, completion, and technical services wells of National Iranian South Oil Company (NISOC) in 2019. This population used as research sample (376 employees). The participants completed the Centralization in the decision-Making (46)), Organizational Silence ((39),), Workplace Mobbing (48) and Job Burnout (6) Questionnaires. Structural equation modeling (SEM) was used for data analysis. The indirect effects were tested using the bootstrap procedure. Results showed that the proposed model fit the data properly. Findings: results showed that centralized decision-Making and workplace mobbing had significant path coefficients with job burnout. Moreover, indirect path coefficients of centralized decision-Making and workplace mobbing with job burnout through organizational silence were significant. Conclusion: Based on the findings of this study, it can be concluded that in order to reduce job burnout, it is necessary to consider the role of centralized decision-making, mobbing in the workplace and organizational silence. Received:
GNES: Learning to Explain Graph Neural Networks

In recent years, graph neural networks (GNNs) and the research on their explainability are experiencing rapid developments and achieving significant progress. Many methods are proposed to explain the predictions of GNNs, focusing on “how to generate explanations” However, research questions like “whether the GNN explanations are inaccurate”, “what if the explanations are inaccurate”, and “how to adjust the model to generate more accurate explanations” have not been well explored. To address the above questions, this paper proposes a GNN Explanation Supervision (GNES) 1 framework to adaptively learn how to explain GNNs more correctly. Specifically, our framework jointly optimizes both model prediction and model explanation by enforcing both whole graph regularization and weak supervision on model explanations. For the graph regularization, we propose a unified explanation formulation for both node-level and edge-level explanations by enforcing the consistency between them. The node- and edge-level explanation techniques we propose are also generic and rigorously demonstrated to cover several existing major explainers as special cases. Extensive experiments on five real-world datasets across two application domains demonstrate the effectiveness of the proposed model on improving the reasonability of the explanation while still keep or even improve the backbone GNNs model performance.1Code available at: https://github.com/YuyangGao/GNES.
Optimisation of railway crossing geometry considering a representative set of wheel profiles

A numerical method for robust geometry optimisation of railway crossings is presented. The robustness is achieved by optimising the crossing geometry for a representative set of wheel profiles. As a basis for the optimisation, a crossing geometry is created where rail cross-sectional profiles and longitudinal height profiles of both wing rails and crossing nose are parameterised. Based on the approximation that the two problems are decoupled, separate optimisations are performed for the cross-sectional rail profiles and the longitudinal height profiles. The rail cross sections are optimised to minimise the maximum Hertzian wheel–rail contact pressure. The longitudinal height profiles are optimised to minimise the accumulated damage in the wing rail to crossing nose transition zone. The accumulated damage is approximated using an objective criterion that accounts for the angle of the wheel trajectory reversal during the transition from the wing rail to the crossing nose as well as the distribution of transition points for the utilised wheel profile set. It is found that small nonlinear height deviations from a linear longitudinal wing rail profile in the transition zone can reduce the objective compared to the nominal design. It is further demonstrated that the variation in wheel profile shapes, lateral wheel displacements and the feasible transition zone length of the crossing will determine the longitudinal height profiles of the wing rail and crossing nose if all wheel profiles are to make their transition within the transition zone.
Assessment of Peri-Implant Tissues Surrounding PEEK and Porcelain Fused to Metal Superstructures in Posterior Region A Randomized Controlled Clinical Trial

Purpose: to compare the clinical and radiographic outcomes of PEEK and PFM implant supported crowns. Methods: This study was designed as randomized controlled study. Twenty-three single implants in posterior region were restored randomly either with PFM or PEEK crowns. Peri implant soft tissue parameters were evaluated using the modified plaque index (mPI), bleeding on probing (BOP), probing depth (PD), modified gingival index (mGI), and crestal bone loss was measured (CBL). Clinical data were collected at crown delivery, after 6 months, and after one year of function. Turkish Journal of Physiotherapy and Rehabilitation; 32(3) ISSN 2651-4451 | e-ISSN 2651-446X www.turkjphysiotherrehabil. org 29651 Results: there was no statistical significant difference between the mean of the modified plaque index (mPI), bleeding on probing (BOP), probing depth (PD), modified gingival index (mGI) in the two groups, while the mean crestal bone loss was statistically less in PEEK group than that of the PFM one. Conclusion: PEEK implant supported crowns appeared to reduce the amount of CBL in the posterior region. Regarding the peri-implant soft tissue parameters both PEEK and PFM crowns showed comparable results.
GPS Enabled Mobile Phone Application for a Real-Time Traffic Information System

Traffic congestion in big cities of the world is a major problem affecting millions of people in their everyday life. Traffic monitoring systems deployed until now, utilize data collected mainly through fixed sensors which provide information about the number and speed of vehicles that cross them. Nevertheless, this type of system is not deployed at wide scales mostly because of its high cost. However, the advances in the mobile phone technology and the high penetration of these devices globally, make possible the development of new traffic management systems that utilize location data from the driver's mobile phone. This thesis work focuses on designing the application for a real-time traffic information system based on GPS enabled mobile phones. Such traffic information system provides vehicles with user specific, on demand route guidance based on real-time traffic information. A JavaME application was developed for collecting the location information of vehicles through an available wireless connection with automatic failover. The security and privacy of the communication has been studied and a solution based on Secure Socket Layer (SSL) and digital certificates was implemented. Moreover, the traffic information is sent back to the user and is displayed on the user’s mobile phone on top of a map of the area
Becoming Fully Intelligent

I am a holistic educator who, in the humanistic tradition, believes that personal growth and the full development of each human’s potential are the ultimate goals of education (Maslow 1971; Rogers 1969; Patterson 1973). This growth and development shouldn’t be purely intellectual; we must also foster students’ emotional, psychological, creative, social, physical, and spiritual potentials. Were this mission to be fully embraced by schools and classroom teachers, we would cultivate a generation of talented, nurturing, thinking humans who possessed the knowledge, skills, and dispositions to transform societies and create a compassionate, cooperative global community. Yes, I believe that education has the power to transform people, societies, and ultimately the world! However, one factor that limits students’ realizing their full potential is the traditional psychometric view of learning and intelligence. In this article I’ll examine the shortcomings of this traditional view and explore six expanded views of intelligence: multiple intelligence theory, the theory of triarchic intelligence, successful intelligence, emotional intelligence, holistic intelligence, and spiritual intelligence. I’ll also describe strategies that can be used by classroom teachers to develop each.
Nephrolithiasisin pediatrics: A literature review

Background: Despitehaving a higherprevalence in adults, theincidenceofnephrolithiasisisobservedatthesame time in pediatricpatients, constitutinganimportant cause ofchildhospitalization. The possibilityofprogressiontochronickidneydisease in thelongterm, ifthediagnosisandtreatment are notperformedcorrectly, indicatesthepotentialseverityofthisdisease. MaterialsandMethods: Thispaperconducted a literaturereview non-systematic. The electronicdatabasesPubmedandScielowereused. Onlyarticles in Englishlanguagewassearched. For thelocationofthearticles, theterms“pediatric”, “nephrolithiasis”, “stones”, “pediatric” and “children” wereapplied. Results: articlespublished from 2010 to 2020 wereprioritized. In addition, themostrelevantworkswereincluded, accordingtotherespectivedatabases. In all, 47 sourceswereselected. Conclusion: The presentationanddevelopmentofthenephrolithiasis in children,although similar totheadultdisease, presentspeculiarities, beingimportant its knowledge, toobtainadequate management ofthepatientandavoid future complications.
THREE ESSAYS ON COMMODITY MARKETS AND HEALTH ECONOMICS

This dissertation includes three essays. The first essay examines time-varying nonlinear dependence and asymmetries of commodity futures from 1999 to 2015. We consider several elliptical copulas with dynamic conditional correlation (DCC) and block dynamic equicorrelation (Block DECO) to capture dependence structure of various commodities across different sectors. Our major findings include: (1) flexible copula specification that allows for multivariate asymmetry and tail dependence appears to have the best model performance in characterizing co-movements of commodity returns. (2) dynamic correlations reveal connectedness degree between commodities has dramatically increased during the financial distress and the European debt crisis, but they declined sharply after 2012 and returned to the precrisis level since. (3) conditional diversification benefit is disappearing and lower tail dependence between commodity markets is much higher in the bearish market. The second essay studies volatility spillover and various connectedness measures for 20 commodity futures from 1996 to 2016. We propose to estimate network connectedness in commodity markets by a previous framework that models direction and magnitude of volatility spillover using reduced-form vector autoregression (VAR) models and generalized forecast error variance decomposition. We find clustering of commodity futures that match their industrial groupings, and energy markets have played a central role in the network in the static analysis. Our dynamic models show that though market interconnections have dramatically increased during the 2007-2009 financial crisis, they have returned to the pre-crisis levels after. We also find that recent downward movement of crude oil prices does not necessarily lead to stronger connectedness between commodity markets.
Selective Cu Electrodeposition on Micrometer Trenches Using Microcontact Printing and Additives

© 2021. The Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/deed.en which permits the use, redistribution of the material in any medium or format, transforming and building upon the material, provided that the article is properly cited, the use is noncommercial, and no modifications or adaptations are made. Arch. Metall. Mater. 66 (2021), 3, 741-744
Exploring the Relationship between HRM, Creativity Climate and Organisational Performance: Evidence from Ireland Authors

The last decade witnessed growing academic evidence suggesting that HR practices are an important predictor of organisational performance. However, the reality is that we know very little about the intermediary mechanisms through which HRM impacts upon performance. If the logic about obtaining sustainable competitive advantage holds, it suggests that we should turn to exploring the role of HRM in fostering the climate of creativity and innovation deemed necessary for competitive success. Drawing on a survey of the top 2,000 performing firms in Ireland, this paper explores these linkages. The findings indicate a significant positive relationship exists between HRM systems, creativity climate and organisational performance outcomes. One HRM practice in particular; communication and involvement was found to be particularly significant in creating a climate of creativity. The paper therefore serves as a useful first step in charting a course through the explanatory void that exists between HRM and organisational performance.
The profile of students HOTS at Malang, Indonesia in responding to higher-thinking biology questions

Higher Order Thinking Skills (HOTS) is one of the primary 21st-century skills that Indonesian schools have not optimally developed. The present study was aimed at 1) presenting the profile of students’ HOTS in Malang and 2) investigating the influence of grades on students’ HOTS. This quantitative study involved 559 students from 18 schools in Malang municipality as the participants. The data were collected using ten essay questions as the instrument and analyzed through descriptive statistics and one-way ANOVA as the data analysis techniques chosen in this study. This study revealed that first, the students of Junior High School in grades VII, VIII, and IX at Malang acquired a low level of HOTS. Second, the students of Senior High School performed an excellent level of HOTS. Third, there was a significant influence of the student's grades to the level of the students’ HOTS in which senior high school students accomplished a higher level HOTS than junior high school students. Therefore, to improve this essential skill, the students in Indonesian schools should be given as much exposure to teaching and assessment based on HOTS.
Motivating small construction companies to adopt new technology

Construction companies are increasingly being challenged to transfer and use new technology. However, little investigation has been undertaken on technology transfer from the perspective of the small construction company. A contribution to this underdeveloped area is based on results from an interview survey of seven small UK construction companies. The results stress that the technology which small construction companies tend to transfer more successfully is that which can contribute to the business in a quick, tangible fashion, and which can fit into existing organizational capabilities. Any technology that is too far removed from this ‘comfort zone’ is seen to require too much investment and to contain too much risk, and thus tends to be intuitively and swiftly sifted out. This is in marked contrast to the relevant literature that depicts large companies operating in more complex networks, drawing upon them for new tacit and explicit technologies that support more long-term, formal technology strategies, and which often complement some form of specialized internal research and development capability. The implication for policy is that any technology transfer initiatives need to appreciate and actively manage the different motivations and capabilities of small and large construction companies to absorb and use new technology. Les entreprises de construction sont de plus en plus appelées à résoudre des questions de transfert et d'utilisation de technologies nouvelles. En revanche, on s'est peu intéressé au point de vue des petites entreprises de ce secteur sur les transferts de technologies. Cette contribution à ce secteur peu développé repose sur les résultats d'une enquête menée en Grande Bretagne auprès de sept petites entreprises de construction. Il en ressort que les technologies que les petites entreprises ont tendance à transférer le mieux sont celles qui peuvent contribuer au développement rapide et tangible des affaires et qui peuvent s'intégrer dans une structure organisationnelle existante. Toute technologie qui s'écarte de trop de cette ‘zone de confort’ est considérée comme nécessitant un investissement trop lourd et présenter trop de risques et a donc tendance à être intuitivement et rapidement mise à l'écart. Cette constatation est en complète opposition avec la littérature qui décrit de grandes entreprises opérant dans le cadre de réseaux plus complexes, attirant vers elles de nouvelles technologies tacites et explicites, compatibles avec des stratégies technologiques officielles à plus long terme et qui, souvent, complètent des formes de recherche interne spécialisée et de capacité de développement. L'implication politique est que toute initiative de transfert de technologie nécessite d'évaluer et de gérer activement les différentes motivations et capacités des petites et grandes entreprises de construction dans leur aptitude à absorber et utiliser de nouvelles technologies.
Acute Effect Of Different Sets Of Ballistic Stretching Protocol On Repeated Sprint Performance Among Football Players

This study aimed to compare the effects of different sets of ballistic stretching protocol on repeated sprint ability (RSA) performance among football players. Fourteen male university football players [age (mean ±SD) 23.4 ± 1.3 years, body mass 70.0 ± 4.8 kg, height 171.6 ± 5.8 cm, body mass index (BMI) 23.4 ± 2.1 kg.m] underwent 4 sessions in the counterbalance design. All sessions included a general warm-up, followed by a ballistic stretching protocol (one set –DSS1; two sets –DSS2; three sets – DSS3) consists of 5 ballistic exercises (gastrocnemius, gluteus maximus, hamstrings, quadriceps femoris and hip extensions). A standardized specific warm-up was then undertaken followed by 5 x 20m with interspersed 30-s active recovery. The finding of study shown a values of total time sprint (TST), mean time sprint (MST) and best time sprint (BST) were significant faster for BSS1 compared to BSS2 and BSS3 (P < 0.05). Fatigue index (FI) was significantly lower in BSS1 compared to BSS2 and BSS3 (P < 0.05). Heart rate and rating of perceived exertion (RPE) also were showed significantly lower value for BSS1 compared to BSS2 and BSS3 (P < 0.05). In conclusion, the performed a single set of ballistic stretching may induce a significant improvement in 20-m RSA performance.