Miracle-dz/UniFAR-FTUs huggingface dataset:
Robust Bregman clustering

Using a trimming approach, we investigate a k-means type method based on Bregman divergences for clustering data possibly corrupted with clutter noise. The main interest of Bregman divergences is that the standard Lloyd algorithm adapts to these distortion measures, and they are well-suited for clustering data sampled according to mixture models from exponential families. We prove that there exists an optimal codebook, and that an empirically optimal codebook converges a.s. to an optimal codebook in the distortion sense. Moreover, we obtain the sub-Gaussian rate of convergence for k-means 1 √ n under mild tail assumptions. Also, we derive a Lloyd-type algorithm with a trimming parameter that can be selected from data according to some heuristic, and present some experimental results.
Modelling the secular evolution of migrating planet pairs

The subject of this paper is the secular behaviour of a pair of planets evolving under dissipative forces. In particular, we investigate the case when dissipative forces affect the planetary semimajor axes and the planets move inwards/outwards the central star, in a process known as planet migration. To perform this investigation, we introduce fundamental concepts of conservative and dissipative dynamics of the three-body problem. Based on these concepts, we develop a qualitative model of the secular evolution of the migrating planetary pair. Our approach is based on the analysis of the energy and the orbital angular momentum exchange between the two-planet system and an external medium; thus no specific kind of dissipative forces is invoked. We show that, under the assumption that dissipation is weak and slow, the evolutionary routes of the migrating planets are traced by the Mode I and Mode II stationary solutions of the conservative secular problem. The ultimate convergence and the evolution of the system along one of these secular modes of motion are determined uniquely by the condition that the dissipation rate is sufficiently smaller than the proper secular frequency of the system. We show that it is possible to reassemble the starting configurations and the migration history of the systems on the basis of their final states and consequently to constrain the parameters of the physical processes involved.
Fracture pattern of Supra condylar humeral fractures in children and lifestyle factors affecting it – Institutional study

The present study was done Tertiary care centre to find the fracture pattern of supracondylar fractures humerus in children and life style factors affecting. Data was collected from parents/guardians fifty clinically and radiologically confirmed cases of supracondylar fractures of humerus in children up to fifteen years of age regarding following parameters1. Age 2.Sex 3. Extremity involved (dominant or non-dominant) 4. Mode of trauma 5.Time since injury 6.Anatomical type of fracture (extension or flexion type) 7.Previous treatment taken 8.Gartland type of fracture 9.Associated injuries 10.Complications at presentation.The data was tabulated and analysed using appropriate statistics. The average age of presentation of these fractures was found to be 7.34 years. Male children were found to be at higher risk of fractures than females. The commonest mode of injury of supracondylar fractures in this study was fall from stairs . The mean delay in presentation was 0.76 days (18.2 hours). 14% of the patients had taken previous treatment from local bone setters in the form of massage or splint age.This study has helped usto work out factors that are preventable and need attention to decrease the morbidity of one of the most frequent injuries in children. Among these need of railing of the stairs and discouraging the treatment from local bone setters need to be addressed urgently.
Industrial wastewater treatment using natural material as adsorbent

Attempts were made to compare the adsorption efficiency of coconut shell-based granular activated carbon with the adsorption efficiency of commercial carbon, Calgon carbon F-300, with respect to adsorption of organic matter from a beverage industrial wastewater. Freundlich adsorption isotherm was used to analyze the adsorption efficiencies of the two activated carbons. These studies indicate that acid-activated coconut shell carbon had higher adsorption for organic matter expressed as chemical oxygen demand, (COD), than barium chloride-activated coconut shell carbon and Calgon carbon (F-300) at all carbon dosages used. Thus, the potential for using agricultural waste (coconut shell) that litter our environment may be valuable resources for removal of organic matter from industrial wastewater.
Alternative splicing of CD 200 is regulated by an exonic splicing enhancer and SF 2 / ASF

CD200, a type I membrane glycoprotein, plays an important role in prevention of inflammatory disorders, graft rejection, autoimmune diseases and spontaneous fetal loss. It also regulates tumor immunity. A truncated CD200 (CD200tr) resulting from alternative splicing has been identified and characterized as a functional antagonist to full-length CD200. Thus, it is important to explore the mechanism(s) controlling alternative splicing of CD200. In this study, we identified an exonic splicing enhancer (ESE) located in exon 2, which is a putative binding site for a splicing regulatory protein SF2/ ASF. Deletion or mutation of the ESE site decreased expression of the full-length CD200. Direct binding of SF2/ASF to the ESE site was confirmed by RNA electrophoretic mobility shift assay (EMSA). Knockdown of expression of SF2/ASF resulted in the same splicing pattern as seen after deletion or mutation of the ESE, whereas overexpression of SF2/ASF increased expression of the full-length CD200. In vivo studies showed that viral infection reversed the alternative splicing pattern of CD200 with increased expression of SF2/ASF and the full-length CD200. Taken together, our data suggest for the first time that SF2/ASF regulates the function of CD200 by controlling CD200 alternative splicing, through direct binding to an ESE located in exon 2 of CD200.
Knowledge, Attitude, and Perception Toward Risk of HIV/AIDS: A Descriptive Study at Universitas Muhammadiyah Magelang

Experiences or negative attitudes towards HIV, low knowledge and perception are also factor that can influence the emergence of stigma and discrimination. The primary objective of this study is to assessing the knowledge, attitude and perception among Faculty of Health Science students of Universitas Muhammadiyah Magelang towards risk of HIV/AIDS. Methods: The data was collected by questionnaire from students in five department Faculty of Health Science. Samples of 165 students using the proportional method. Each respondent’s scores were totalled and individual average scale scores were analysed using descriptive analysis. Result: 53.34% of Faculty of Health Sciences students have the level of knowledge towards risk of HIV and AIDS was moderate (range 51-74). 62.5% of students have a positive attitude (0.63) and 51.5% of students have a negative perception. There is significant correlation between knowledge and attitude. However, no significant correlation was found between knowledge and perception. Conclusions: Increase knowledge about HIV/AIDS through education and training since attending college, providing sufficient and up-to-date information about HIV/AIDS so as to be able to prepare health science faculty students to treat patients with HIV/AIDS and reduce negative stigma and discrimination.
Safety of 3’‐Sialyllactose (3’‐SL) sodium salt as a novel food pursuant to Regulation (EU) 2015/2283

Abstract Following a request from the European Commission, the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was asked to deliver an opinion on 3’‐Sialyllactose (3’‐SL) sodium salt as a novel food (NF) pursuant to Regulation (EU) 2015/2283. The NF is mainly composed of the human identical milk oligosaccharide (HiMO) 3’‐SL but also containing D‐lactose, sialic acid and a small fraction of other related oligosaccharides resulting in a fully characterised mixture of carbohydrates. The NF is produced by fermentation with a genetically modified strain of Escherichia coli K‐12 DH1. The information provided on the manufacturing process, composition and specifications of the NF does not raise safety concerns. The applicant intends to add the NF in a variety of foods, including infant and follow‐on formula, foods for infants and toddlers, foods for special medical purposes and food supplements. The target population is the general population. The anticipated daily intake of 3’‐SL from the NF at the maximum proposed use levels is unlikely to exceed the intake level of naturally occurring 3’‐SL in breastfed infants on a body weight basis. The intake of 3’‐SL in breastfed infants on a body weight basis is expected to be safe also for other population groups. The intake of other carbohydrate‐type compounds structurally related to 3’‐SL is also considered of no safety concern. Food supplements are not intended to be used if other foods with added NF (as well as breast milk, milk, fermented milk‐based products and selected cheeses retaining milk sugar (e.g. curd cheese) for infants and young children) are consumed on the same day. The Panel concludes that the NF is safe under the proposed conditions of use for the proposed target populations.
Empowering Ambivalence - Supporting multiple interpretations in knowledge-based systems. (De l'ambivalence : supporter les interprétations multiples dans les systèmes à base de connaissances)

Building intelligent systems out of computers has been a continuous challenge for many computer scientists and developers. Among different paths to that goal, one that has been largely studied involves the explicit representation of knowledge , and the processing of those representations by generic reasoning engines. The advent of the Web, and then of mobile computing, has however dramatically changed the way we use computers, and with it our expectations of what such intelligent systems should be. It has also changed the means available to build them. The goal of this dissertation is to show how, in my work in the last ten years, I have been aiming at novel approaches to knowledge engineering, intending to tackle the new challenges and op‐ portunities brought by the Web. mation rules would result in the creation of new (more abstract) obsels ( e.g. copy-paste, send an e-mail to a colleague) which could in turn participate in triggering other rules. This would make the task of assistance designers more modular, decoupling the interpretation of low-level activity from the decision of performing an assistance action.
A Paradigm Shift in School Readiness: A Comparison of Parents’, Pre-service andIn-service Preschool Teachers’ Views

School readiness is associated with children’s later school based-outcomes. School readiness covers skills, behaviors, and attitudes related to whole child development. It is a multidimensional issue regarding readiness in children, readiness for parents, and readiness for schools. Therefore, the issue concerns parents, teachers, and researchers. In the present study, a phenomenological research design was used to examine and compare parents’, pre-service and in-service preschool teachers’ views on school readiness. The participants of this study were 50 parents, 50 pre-service and 50 in-service preschool teachers. The participants were selected using the purposive sampling method. Semi-structured interview protocols were used to collect the data. The participants were asked four main questions regarding the definition of school readiness, factors related to school readiness, problems in school readiness, and their suggestions for improvements in school readiness. The findings revealed that the participants mostly defined school readiness from a maturationalistic perspective regarding children’s developmental domains, especially cognitive and psychomotor skills. Mothers and preschool teachers were described as the most effective people in the school readiness process. Participants’ explanations regarding problems in the school readiness process and their suggestions to improve children’s school readiness were discussed in light of the literature.
The Effects of Psychological Well-Being and Academic Efficacy on the Self-Leadership of Nursing Students

The purpose of this study was to investigate the factors that psychological well-being and academic self-efficacy of nursing students affect self-leadership. This is a descriptive study which collected data through a structured questionnaire for first-year students at a nursing college in Korea. The data were analyzed by descriptive statistics, Pearson correlation. The scores for psychological well-being, academic self-efficacy, and self-leadership were 3.25, 3.00, and 3.43, respectively. The psychological well-being and self-leadership (r=.088, p<.001), academic self-efficacy and self-leadership (r=.105, p<.001), and psychological well-being and academic self-efficacy (r=.142, p<.001) all showed significant correlations. We expect this study to be used as basic data for developing curriculums and programs to foster professional nurses by enhancing the self-leadership of nursing students, which affects their self-competence and motivation.
Interpretation of aeromagnetic anomalies over the Lower and Middle Benue Trough of Nigeria

Summary. The results of an interpretation of aeromagnetic anomalies over the Lower and Middle Benue Trough of Nigeria are presented. Two-dimensional interpretation of the anomalies shows that the anomalies are best interpreted in terms of basic intrusive bodies occurring either within the Cretaceous sediments or within the metamorphic basement or both. The model suggests that the intrusive bodies are of variable thickness and magnetization polarity, and may have been emplaced during different epochs of polarity. The model is in good agreement with interpretations of gravity and magnetic anomalies over similar structures elsewhere in the world.
Coupled Fluid-Thermal Analysis for Induction Motors with Broken Bars Operating under the Rated Load

Thermal stress of the rotor in a squirrel cage induction motor is generated due to the temperature rise, it is also one of the factors causing the broken bar fault because the structure of the rotor would be destroyed if the stress of the rotor bars exceed the strength limit. The coupled fluid-thermal analysis for the induction motor with healthy and broken bar rotors is performed in this paper. Much concern has been committed to establishment of the fluid model on the basis of computational fluid dynamic (CFD) theory. The heat field of the prototypes is analysed so that the effect of the asymmetrical rotor on the motor heat performance can be investigated in depth. Eventually, the efficiency of the presented model and method, for the totally enclosed fan cooled (TEFC) induction motor, can be verified through experimental results. In addition, this paper reports a quantitative analysis of the heat flux distribution of the fault rotor, and the heat flux density of the bars is investigated in detail. Then, the part most likely to break in the rotor as a result of the thermal load is identified.
The Moyjil site, south-west Victoria, Australia: fire and environment in a 120,000-year coastal midden — nature or people?

At Moyjil (Point Ritchie), a cliffed site at the mouth of the Hopkins River at Warrnambool, south-eastern Australia, an erosional disconformity of Last Interglacial age on both a rock stack and the adjacent headland represents a surface of possible human occupation. Shells of edible marine molluscs occur on the disconformity, together with a distinctive population of transported stones derived from a calcrete of MIS 7 age and bearing variable dark grey to near-black colouration suggestive of fire. Experimental fire produced similar thermal alteration of calcrete. A strong correlation exists between intensity and depth of dark staining on one hand and increased magnetic susceptibility on the other. Thermal luminescence analyses of blackened stones provide ages in the MIS 5e range, 100–130 ka, consistent with independent stratigraphic evidence and contemporaneous with the age of the surface on which they lie. The distribution of fire-darkened stones is inconsistent with wildfire effects. Two hearth-like features closely associated with the disconformity provide further indications of potential human agency. The data are consistent with the suggestion of human presence at Warrnambool during the Last Interglacial.
Understanding Affect, Stress, and Well-being within a Self-Regulation Framework

Abstract Research on self-regulation has tended to focus on goal-related performance, with limited attention paid to individuals’ affect and the role it plays during the goal-striving process. In this chapter we discuss three mechanisms to integrate affect within a control theory-based self-regulation framework, and how such integrations inform future research concerning employee stress and well-being. Specifically, affect can be viewed as a result of velocity made toward one’s desired states at work. Fast progress results in positive affect, which enhances employee well-being and reduces the detrimental effects associated with exposure to occupational stressors. On the other hand, slow or no progress elicits negative affect, which induces employee distress. Second, affect can also be considered an input of self-regulation, such that employees are required to regulate their emotional displays at work. Employees who perform emotional labor compare their actual emotional display against the desired display prescribed by display rules. Third, affect can function as a situational disturbance, altering employees’ perceptions or assessments of the input, comparator, and output for other self-regulatory processes.
Engaging EFL Teachers in Reflective Practice as A Way to Pursue Sustained Professional Development

Reflective practice has become a significant aspect in determining good teaching and learning practices and is an important part of professional practice and professional growth. However, English teachers in Indonesia has not been able to perform reflection on their teaching in order to improve their teaching practice. This study reports the results of an intensive training held by PKM UNS to help teachers develop a reflective teaching habit. The participants were 30 English teachers of Islamic Senior High School in Solo Raya. Observation field notes and teacher assignments were used as the main data collection method. From this program, it was found that the English teachers encountered plethora of challenges in developing reflective practice due to their lack of understanding of reflective teaching. However, the teachers show an improvement in implementing reflective teaching strategies after their participation in the training. Recommendations to include reflective practices in teacher professional development programs is drawn based on the findings.
Nano-engineered high-confinement AlGaAs waveguide devices for nonlinear photonics

The combination of nonlinear and integrated photonics enables applications in telecommunication, metrology, spectroscopy, and quantum information science. Pioneer works in silicon-on-insulator (SOI) has shown huge potentials of integrated nonlinear photonics. However, silicon suffers two-photon absorption (TPA) in the telecom wavelengths around 1550 nm, which hampers its practical applications. To get a superior nonlinear performance, an ideal integrated waveguide platform should combine a high material nonlinearity, low material absorption (linear and nonlinear), a strong light confinement, and a mature fabrication technology. Aluminum gallium arsenide (AlGaAs) was identified as a promising candidate for nonlinear applications since 1994. It offers a large transparency window, a high refractive index (n≈3.3), a nonlinear index (n2) on the order of 10-17 m2W−1, and the ability to engineer the material bandgap to mitigate TPA. In spite of the high intrinsic nonlinearity, conventional deep-etched AlGaAs waveguides exhibit low effective nonlinearity due to the vertical low-index contrast. To take full advantage of the high intrinsic linear and nonlinear index of AlGaAs material, we reconstructed the conventional AlGaAs waveguide into a high index contrast layout that has been realized in the AlGaAs-on-insulator (AlGaAsOI) platform. We have demonstrated low loss waveguides with an ultra-high nonlinear coefficient and high Q microresonators in such a platform. Owing to the high confinement waveguide layout and state-of-the-art nanolithography techniques, the dispersion properties of the AlGaAsOI waveguide can be tailored efficiently and accurately by altering the waveguide shape or dimension, which enables various applications in signal processing and generation, which will be reviewed in this paper.
Fatigue resistance of endodontic instruments manufactured in NiTi CM Wire and in conventional NiTi alloy with eletrochemical treatment

ABSTRACT Objective: This study compared the fatigue behavior of endodontic instruments manufactured with conventional NiTi alloy electropolishing, RaCe (FKG Dentaire, LaChauxdeFonds, Switzerland), with instruments manufactured with NiTi CM Wire subjected to thermomechanical treatment, in the manufacturing process, HyFlex CM (Coltène Whaledent, Cuyahoga Falls, Ohio, USA), both with similar geometry and dimensions in order to determine the influence of the manufacturing process in the fatigue resistance. Methods: The methodoly consisted of twenty HyFlex CM and RaCe instruments with D0 0.25 mm, taper 0.06 mm / mm, 25 mm length, both with triangular cross section. The fracture resistance was evaluated by static fatigue test, using a stainless artificial canal with 5mm of radius (86°), recording the time and calculating the number of cycles until fracture occurs (NCF). For statistical analysis the Student t test was used The fractured instruments surface was analyzed by SEM. Results: The NCF was significantly higher for HyFlex CM instruments in comparison with RaCe files (P˂0.05) being 1336% more resistant to fatigue. The analysis of the fractured surface by SEM showed ductile-kind morphological characteristics for both instruments and the absence of plastic deformation. Conclusion: HyFlex CM instruments present higher values of NCF. Thus, it can be concluded that the thermal treatment to which these instruments with CM Wire alloy are submitted makes them more resistant to fracture than Race instruments manufactured with conventional NiTi alloy electropolishing.
Nonparametric Production Analysis with Unobserved Heterogeneity in Productivity

We propose a novel nonparametric method for the structural production analysis in the presence of unobserved heterogeneity in productivity. We assume cost minimization as the firms' behavioral objective, and we model productivity on which firms condition the input demand of the observed inputs. Our model can equivalently be represented in terms of endogenously chosen latent input costs that guarantee data consistency with our behavioral assumption, and we argue that this avoids a simultaneity bias in a natural way. Our Monte Carlo simulation and empirical application to Belgian manufacturing data show that our method allows for drawing strong and robust conclusions, despite its nonparametric orientation. For example, our results pinpoint a clear link between international exposure and productivity and show that primary inputs are substituted for materials rather than for productivity enhancement.