Miracle-dz/UniFAR-FTUs huggingface dataset:
The effects of radiofrequency electromagnetic fields on cognition.

The acute effects of radiofrequency electromagnetic fields (RF EMF) on human cognitive performance were investigated. Cognitive tasks were identified from RF EMF cognitive research; tests used most extensively were psychomotor performance, attention, working and episodic memory tasks. Review of published imaging research enabled selection of a battery of cognitive tasks for use in the experimental studies. Effects of practice and the test-retest reliabilities on the tests were evaluated and the relationship between the tests within the battery and measures of ability and personality investigated. Three studies were conducted to identify whether RF EMF produced by occupational communication systems had reliable effects on cognitive performance and self-reports of mood, anxiety and workload. Double-blind repeated measures design was used to investigate the following fields in comparison to sham; a high frequency (HF) 29MHz continuous wave (CW) signal, a very high frequency (VHF) 75MHz CW field, an Ultra High Frequency (UHF) modulated 448MHz field, a UHF 1206MHz CW signal and a TETRA 388MHz field pulse modulated at 17.6Hz. The first study demonstrated no significant effects of the VHF signal on performance when compared to sham. The HF signal appeared to reduce response time to two of the cognitive tasks and affect error rate on one of them. Investigation of the two UHF signals showed no reliable differences between conditions on the cognitive measures. The third study showed reliable differences between TETRA exposure and sham conditions on two of the tasks. Overall the results indicate that RF EMF signals at the frequencies and power levels used in these studies are well tolerated in healthy subjects. In general, the signals do not appear to have reliable and robust effects on human cognitive performance. However, there may be subtle transitory effects of RF EMF that are not well understood at the present time.
Skill needs for the future.

The digital economy is developing rapidly but unevenly across countries, firms, and people. While the rapid deployment of digital technologies such as robotics and 3D printing can usher in a new era of productivity, create efficiencies and generate jobs. Given the dynamic impact of digitalisation on the labour market – both in terms of employment and occupational structure – it is becoming increasingly important for developing economies to adapt to the rapidly changing skills landscape. To become more competitive, developing economies need to re-equip and re-skill their workforce with skills that are going to become important in the future. The main aim of this study is to identify these future skills. There is a digital divide between developing and developed countries, both in terms of access and use of digital technologies. To close this digital divide, the study puts forward four areas that need to be addressed in developing economies:
True or False? Defining the Fake in Chinese Porcelain

This article explores the category of ‘fake’ in Chinese porcelain. It begins by defining the fake in the context of Chinese art and considers how the fake might be a stylistic category as well as a concept with reference to Chinese ceramics. Fake porcelain by definition is made to deceive but what kind of deception is intended? Some porcelain is made to deceive the buyer who believes it is ‘authentic’. This is falsifying for profit. However, deception can also be a form of aesthetics or even a necessity. Some Chinese porcelains were intentionally made in imitation of past pieces, for example. These are usually defined as ‘archaistic’. Others were made as replacements, and still others as skeuomorphs in the trompe l’oeil tradition that developed in court arts of the Qing period. For the latter, this article queries and explores what in fact is being faked. In doing so, it demonstrates that the concept of ‘fake’ in Chinese porcelain is complex and its production is grounded in both commercial and connoisseurship practices. In order to explore the complexity of this concept this article examines the various types of Chinese porcelain that might be defined as fake, looking at the motivations, history, reception and audiences for this kind of production in dynastic and contemporary China. Stylistically six types of ‘fake’ porcelains have been identified for the purposes of this article: deceptive pieces; aesthetic fakes; antiquarian pieces; necessary fakes; objects with fake identification, and fakes made as artworks. Ultimately, truly deceptive fakes, like forgeries, are an increasing problem across the arts, not just in Chinese porcelain, but this article demonstrates that the production of fake Chinese porcelain was deceptive in several different ways and such porcelains were made in a very particular context that is revealed when the subject of ‘fake’ porcelain is positioned within a historical stylistic framework.
Improving Model Cross-Applicability for Operator Workload Estimation

When operators are overwhelmed, judicious employment of automation can help. Ideally, an adaptive system which can accurately estimate current operator workload can more effectively employ automation. Supervised machine learning models can be trained to estimate workload from operator-state parameters sensed by on-body sensors which, for example, collect heart rate or brain activity information. Unfortunately, estimating operator workload using trained models is limited: using a model trained in one context can yield poor estimation of workload in another. This research examines the efficacy of using two regression-tree alternatives (random forests and pruned regression trees) to decrease workload estimation cross-application error. The study is conducted for a remotely piloted aircraft simulation under two context-switch scenarios 1) across human operators and 2) across task conditions. While cross-task results were inconclusive, both algorithms significantly reduced cross-application error in estimating workload across operators, and random forests performed best in cross-operator applicability.
Detection of Persuasion Campaigns on Twitter™ by SAX-VSM Technology

In this paper, we present a novel approach for detection of persuasion campaigns in online social networks. We demonstrate that temporal evolution of different information cascades in social media display unique signatures of diffusion patterns which are indicators of different kinds of information spreads in underlying networks. We describe a progress of information diffusion through networks by multidimensional time series, representing temporal behavior of multiple cascade features and apply our SAX-VSM technique for classification of the time series. This approach allows us to distinguish two types of topics on TwitterTM, promoted or advertisement campaigns and non-promoted or naturally trending topics. We show that the classification can be done without content analysis of topics, using only network topological features, statistics of users’ temporal activity within networks, and some metadata. Optimal selection of right information cascade features allows to achieve classification
Using voice to tag digital photographs on the spot

Tagging of media, particularly digital photographs, has become a very popular and efficient means of organizing material on the internet and on personal computers. Tagging, though, is normally accomplished long after the images have been captured, possibly at the expense of in-the-moment information. Although some digital cameras have begun to automatically populate the various fields of a photograph's metadata, these generic labels often lack in the descriptiveness presented through user-observed annotations and therefore stress the necessity of a user-driven input method. However, most mobile annotation applications demand a great number of keystrokes in order for users to tag photographs and thereby focus the user's attention inward. Specifically, the problem is that these applications require users to take their eyes off the environment while typing in tags. We hypothesize that we can shift the user's focus away from the mobile device and back to their environment by creating a mobile annotation application which accepts voice commands. In other words, our major hypothesis is that a convenient way of tagging digital photographs is by using voice commands.
O desafio da gestão das redes de políticas

Todos estes fatores têm confluído para gerar a proliferação de redes gestoras de políticas públicas, especialmente no campo das políticas sociais, no qual incidem fortemente. Neste sentido, as redes têm sido vistas como a solução adequada para administrar políticas e projetos onde os recursos são escassos, os problemas são complexos, existem múltiplos atores envolvidos, interagem agentes públicos e privados, centrais e locais, há uma crescente demanda por benefícios e por participação cidadã.
Bringing a Natural Experiment into the Laboratory: The Measurement of Individual Risk Attitudes

Controlled laboratory experiments have become a generally accepted method for studying economic behavior, but there are two issues that regularly arise with such work. The first pertains to the ability to generalize experimental results outside the laboratory. While laboratory experiments are typically designed to mimic naturally occurring situations, ceteris paribus comparisons are rare. Using data from a promotional campaign by a bank and a matching laboratory experiment, we find similar patterns of risk taking behavior controlling for gender and age. The second issue pertains to the impact that the payment procedure in an experiment has on observed risk taking behavior. Specifically, we compare behavior on a risk taking task where that is the only task and payment is assured, where it is one of several similar tasks of which one will be randomly selected for payment, and where it is the only task but there is only a small probability of receiving payment. We find similar behavior across these three payment procedures.
Strategic Interaction in Alliances

Research summary: This article studies strategic interactions between firms that form alliances to exploit synergistic benefits. Firms cooperate to create value, but they can also compete to capture value. Fundamental questions rarely addressed by strategy scholars relate to how the configuration of control over resources influences firms' strategies, the potential for termination, and the emergence of cooperation and trust. The formal results reveal crucial aspects of the interorganizational rent-generating process and yield testable implications. With greater synergistic benefits, firms invest more, but they also compete more intensively to capture more value. With symmetric control, more value gets created, which limits the potential for termination, but also exacerbates the competition for value; from a relational perspective, this form of control augments the calculative rationale of cooperation and trust. Managerial summary: When forming an alliance to exploit synergies, firms engage in a complicated strategic interaction that is part cooperation and part competition. What happens when partner firms cooperate and invest to create value while competing and using costly adversarial tactics to capture value? The analysis reveals that with greater synergistic benefits, firms invest more in value creation, but the fear of opportunism pushes them to waste more resources on value capture tactics. The balance between value creation and value capture, and the possibility that the alliance is terminated depend on the configuration of control over resources. The analysis further reveals under what conditions there can be trust between the partners, such that they focus on value creation and avoid wasting resources in the competition for value. Copyright © 2016 John Wiley & Sons, Ltd.
Gender dynamics in co-education schools: a comparative study of two schools in india

Les chercheurs s’interrogent sur le role de la mixite et de l’education separee dans la promotion de l’egalite filles-garcons et la lutte contre les stereotypes de genre. Jusque la, les reponses sont contradictoires et peu concluantes. En s’appuyant sur deux ecoles mixtes indiennes, cet article propose d’analyser comment une scolarisation basee sur la mixite influence les modalites de l’egalite des sexes. Il en ressort que, quel que soit le type de scolarisation (ici mixte), le contexte socioculturel ou s’insere l’institution pese de tout son poids. L’article met en valeur la maniere dont l’environnement scolaire agit, par le biais des pratiques scolaires comme des preoccupations parentales, mais aussi le role de l’ecole en tant qu’interface entre les discours traditionnels et plus modernes et ses consequences dans les relations entre pairs. A partir de donnees qualitatives recoltees lors d’entretiens semi-directifs avec des acteurs de terrain (responsables d’ecoles, leaders communautaires et etudiants par le biais de groupes de discussions), il semble que la mixite ne soit pas suffisante pour ameliorer les relations de genre. Bien que les deux ecoles soient mixtes, les pratiques scolaires et les relations hommes-femmes existantes influent largement sur la mise en place des politiques educatives.
The effect of the use of mathematics course in terms of prospective teachers’ attitudes toward mathematics and their beliefs on the nature, teaching, and learning of mathematics

The aim of this study is to examine the effect of the use of mathematics course on the prospective teachers’ attitudes towards mathematics and their beliefs on the nature, teaching and learning of mathematics and also to explore their opinions about the subject course. The results of the study were also interpreted according to the academic achievement variable. The study was prepared according to the mixed embedded experimental design and the study group is formed with 40 prospective teachers who take the use of mathematics compulsory elective course in a state university in Turkey. The Mathematical Attitude Scale, the Beliefs Scale about Mathematics Teaching and Learning and Student Opinion Form were used in the study. It was found that the prospective teachers who took the subject course differed significantly and positively in their attitudes towards mathematics, enjoyed mathematics more after the course and had more confidence in themselves by defeating their fears. The use of mathematics course made prospective teachers to deviate from traditional beliefs and have more constructive beliefs about mathematics. Besides, the effect of the course on the attitudes and beliefs of the prospective teachers with different academic achievement levels did not differentiate.
Gross Exports versus Value Added Exports: Determinants and Policy Implications for Manufacturing Sectors in Selected CEE Countries

The main objective of this paper is to assess the impact of selected determinants on both exports in value added and exports in gross terms for seven CEE economies, based on 13 manufacturing subsectors and for the period 1995-2011. The results of the analysis show a substantial decrease in domestic value added in a majority of the countries, especially in medium-high- and high-tech industries. For the seven CEE countries the impact of the main determinants (except vertical specialisation) are fairly similar when exports are measured in value added or in gross terms. The results indicate a greater impact of labour productivity and highly skilled employees on generating domestic value added in the manufacturing sector. CEE countries do not achieve comparative advantages of a capital-intensive nature in exports of manufactured products. Additionally, manufacturing in CEE countries does not serve a ‘carrier function’ for services to contribute to a country’s export performance.
Cooperative Spectrum Sensing in Cognitive Radio Networks

Cognitive users need to detect primary users continuously and rapidly.Cooperative spectrum sensing in cognitive radio(CR) networks is analyzed.Cooperative spectrum sensing in the ideal network with two cognitive users can reduce the mean detection time.Detection probability to primary users can be improved by multi-cooperative users in multi-user networks.Finally,the realization of multi-user networks is considered.
Semantics and morphosyntax in predictive L2 sentence processing

Abstract In the context of current approaches to anticipation in native and non-native sentence processing, this paper investigates whether late second-language (L2) learners integrate morphosyntax, i.e. case marking, and verb semantics to generate anticipations in L2 sentence comprehension. In a visual-world eye-tracking experiment with 45 L1 English L2 learners of German and 12 German natives, German natives are found to integrate morphosyntactic and lexical-semantic information in anticipatory processing, while L2 learners only rely on lexical-semantic information for prediction. Moreover, there is no indication that increasing proficiency leads to the involvement of morphosyntax in predictive L2 processing. We discuss reasons for the lower sensitivity to morphosyntax in anticipatory L2 sentence processing.
The effect of variable labels on deep learning models trained to predict breast density

Purpose. High breast density is associated with reduced efficacy of mammographic screening and increased risk of developing breast cancer. Accurate and reliable automated density estimates can be used for direct risk prediction and passing density related information to further predictive models. Expert reader assessments of density show a strong relationship to cancer risk but also inter-reader variation. The effect of label variability on model performance is important when considering how to utilise automated methods for both research and clinical purposes. Methods. We utilise subsets of images with density labels from the same 13 readers and 12 reader pairs, and train a deep transfer learning model which is used to assess how label variability affects the mapping from representation to prediction. We then create two end-to-end models: one that is trained on averaged labels across the reader pairs and the second that is trained using individual reader scores, with a novel alteration to the objective function. The combination of these two end-to-end models allows us to investigate the effect of label variability on the model representation formed. Results. We show that the trained mappings from representations to labels are altered considerably by the variability of reader scores. Training on labels with distribution variation removed causes the Spearman rank correlation coefficients to rise from 0.751 ± 0.002 to either 0.815 ± 0.026 when averaging across readers or 0.844 ± 0.002 when averaging across images. However, when we train different models to investigate the representation effect we see little difference, with Spearman rank correlation coefficients of 0.846 ± 0.006 and 0.850 ± 0.006 showing no statistically significant difference in the quality of the model representation with regard to density prediction. Conclusions. We show that the mapping between representation and mammographic density prediction is significantly affected by label variability. However, the effect of the label variability on the model representation is limited.
INDIRECT WRITTEN CORRECTIVE FEEDBACK, REVISION, AND LEARNING

Corrective feedback, the necessity of providing it, and how it should be provided has been one of the hot topics in the area of ELT. Amid continuing controversies over whether providing feedback helps L2 learners improve their writing accuracy, many research studies have been undertaken to compare the relative effectiveness of different types of feedback. However, the difference between two types of indirect corrective feedback, namely indication and indication plus location, have not been properly examined yet. Motivated to narrow this gap, this study is designed to compare two groups of Iranian learners, each revising their papers based on one of the aforementioned options. For data analysis, a series of independent samples t tests were employed. The results revealed that the difference between the two groups in their reduction of errors from the original draft to the revision of each task followed a growing trend and became significant. Nonetheless, the difference in accuracy of new pieces of writing fell short of significance. Finally, it was found that error reduction in revision stage cannot be considered as learning. The results of the study, discussed in relation to that of others, implicate that the purpose for which feedback is provided is essential in determining the type of feedback; more explicit feedback is better for revising purposes while more implicit feedback is good for learning purposes.
Parental Prominence, Student Housing Quality and Academic Success among Public Universities Students in Southwest, Nigeria

University education, if properly managed remains an appropriate mechanism through which human and nation development could be attained. In spite of numerous studies that have explored academic performance in Nigeria, the contributions of parental prominence and student housing quality on academic success are yet to be explored in the nation’s public universities. This study addresses this gap by raising this question: to what extent does parental prominence and student housing predict the attainment of academic success among university undergraduates? The cross-sectional survey design, with multi-stage and purposive sampling technique was adopted. Primary information was sourced from 426 final year students of OAU, OOU and AAUA. The outcome variable of this study was academic success; and it was measured by student’s attainment of outstanding or weak academic success. The key explanatory variables were parental prominence and student housing quality. Multivariate rank ordered-logistic regression and ANOVA was applied using Stata 14. Results showed that academic success was negatively associated with student housing quality. Also, results showed that parental prominence (marital status, employment status, gender preference, occupation type) were statistically associated with academic success. Results further European Journal of Educational Sciences, EJES March 2019 edition Vol.6 No.1 ISSN 18576036 96 showed that student housing quality and financial supports contributed about 9% to academic success. The study concluded that the challenges posed by inadequate and poor student housing facilities, lack of adequate financial supports for university students, parental gender preference in meeting-up with education needs of their children must be addressed in order to stimulate the attainment of outstanding academic success among students of public universities in Southwest, Nigeria.