background: the aim of the present study is to evaluate the effects of a fl uoride-releasing composite resin bonding material on reducing enamel demineralization underneath and around orthodontic brackets and compare that with a conventional adhesive system. materials and methods: buccal surfaces of 10 intact extracted premolar teeth were divided into two parts with nail varnish and stainless s...

background: antidepressant drugs such as fl uoxetine are of the most commonly used drugs among the public. these drugs may impact the regulation of bone cell functioning, and thus affect orthodontic tooth movement. the aim of this study was to determine the effect of fl uoxetine on tooth movements during orthodontic treatment in rats. materials and methods: in this study, 30 male rats were rand...

The benefit mutually gained by cooperators is considered the ultimate explanation for why cooperation evolved among non-relatives. During intergroup competition, cooperative behaviours within groups that provide a competitive edge over their opposition should be favoured by selection, particularly in lethal human warfare. Aside from forming larger groups, three other ways that individuals withi...

Interest in end-of-year accountability exams has increased dramatically since the passing of the NCLB law in 2001. This push has impacted educational research in a wide variety of ways, including a strong desire to be able to model student work in order to make conclusive statements about what students know and how this relates to how they will perform on end-of-year standardized exams. This th...

<p align="justify">Federated learning (FL) has emerged as one of the most effective solutions to deal with rapid utilization internet things (IoT) in big data markets. Through FL, local at each IoT device can be trained locally without sharing cloud server. However, this conventional FL may still suffer from privacy leakage when are trained, and model is shared server update global predic...

introduction: the aim of this study was to determine the performance of data mining techniques for predicting the causes of traumatic brain injuries in khatamolanbya hospital, zahdan city. method: in this cross–sectional, the study population included all patients who died of brain injury. data were collected by the use of a researcher- made check list, provided under the direct observation of ...

Language proficiency tests are used to evaluate and compare the progress of language learners. We present an approach for automatic difficulty prediction of C-tests that performs on par with human experts. On the basis of detailed analysis of newly collected data, we develop a model for C-test difficulty introducing four dimensions: solution difficulty, candidate ambiguity, inter-gap dependency...

It has been reported in previous work that students’ online tutoring data collected from intelligent tutoring systems can be used to build models to predict actual state test scores. In this paper, we replicated a previous study to model students’ math proficiency by taking into consideration students’ response data during the tutoring session and their help-seeking behavior. To extend our prev...