The Social Media Disorder Scale

There is growing evidence that social media addiction is an evolving problem, particularly among adolescents. However, the absence of an instrument measuring social media addiction hinders further development of the research field. The present study, therefore, aimed to test the reliability and validity of a short and easy to administer Social Media Disorder (SMD) Scale that contains a clear diagnostic cut-off point to distinguish between disordered (i.e. addicted) and high-engaging non-disordered social media users.Three online surveys were conducted among a total of 2198 Dutch adolescents aged 10 to 17. The 9-item scale showed solid structural validity, appropriate internal consistency, good convergent and criterion validity, sufficient test-retest reliability, and satisfactory sensitivity and specificity. In sum, this study generated evidence that the short 9-item scale is a psychometrically sound and valid instruments to measure SMD.     

REENACT: A step forward in immersive learning about Human History by augmented reality,role playing and social networking

Classical pedagogy about Human History has dealt with many historic events as a mere collection of dates, locations and a number of confronted sides with a final result of victory or defeat. In the same line of thinking, many popular battles and wars are not well understood due to non-rigorous treatment in comics, movies and documentaries. In order to fight these drawbacks we propose a novel technology-enhanced pedagogical approach named REENACT which is aimed at engaging groups of people into immersive experiences to improve their learning about historical battles and wars from the points of view of reenactors and historians. To this aim, REENACT relies on handheld devices and an advanced technological facility that comprises social networking features, augmented reality capabilities and repositories of multimedia contents. Our pedagogical approach has been experimentally validated in collaboration with the Foundation of the Hellenic World in Greece and the School of Telecommunication Engineering from the University of Vigo in Spain. The obtained results in terms of Quality of Experience, Quality of Service and Quality of Community reveal the potential value of the approach to provide new edutainment collective experiences which remain unexplored thus far in educational environments.     

成庄矿洗选厂斜轮自动放矸装置的改造应用

针对成庄矿洗选厂原斜轮分选机放矸系统的设计缺陷及运行中存在的问题,如工人劳动强度大、系统运行方式不合理、技术相对落后等,通过对斜轮分选机放矸装置进行技术改造,形成了完善的自动放矸系统。该系统改造主要包括:放矸阀门自动关联互锁控制、介质高效回收、矸石自动排放等,实现了斜轮分选机的定时自动放矸。经过使用验证,此项革新解决了斜轮分选机的放矸问题,年经济效益达到800万元以上,并有效降低了工人的劳动强度。     

Labyrinth 3D. Cultural archetypes for exploring media archives

Since the advent of the World Wide Web, online media archives have changed their audience from a restricted number of professionals and amateurs to the general public. This shift is not without consequences: if, on the one side, it represents an important opportunity for archives to engage in a dialogue with a larger audience, on the other side, it advocates novel forms of access that go beyond the highly specialized models underlying traditional access tools. In this paper, we propose to use 3-D graphics for designing novel tools of exploratory search in cultural heritage archives. Our approach has been deployed as an online virtual environment where the user can navigate the meaning relations over the items in the archive. Targeted at cultural heritage, the application, called Labyrinth 3D, relies on the use of cultural archetypes to inform the conceptualization of the archive and the creation of the virtual environment, with the goal of engaging the user in the exploration of the archive through the creation of personal paths.     

A cognitive component analysis approach for developing game-based spatial learning tools

Spatial ability has been recognized as one of the most important factors affecting the mathematical performance of students. Previous studies on spatial learning have mainly focused on developing strategies to shorten the problem-solving time of learners for very specific learning tasks. Such an approach usually has limited effects on improving the mathematical performance of students. In this study, a cognitive analysis approach is proposed for developing spatial learning tools by taking game characteristics into consideration. Moreover, the validation of the cognitive components of the spatial sense test for constructing two different kinds of intervention is verified, and the effects of the interventions are compared. To evaluate the performance of the proposed approach, an experiment was conducted on the mathematics course of an elementary school. The experimental results show that the spatial learning tool promotes not only the learning achievement, but also the spatial sense of the students.     

An attitude scale for smart board use in education: Validity and reliability studies

The main purpose of this study was to develop an instrument to measure the attitudes of elementary students towards smart board (SB) use in education. A sequential exploratory mixed method was used. So the study started with a qualitative approach to establish the content and face validity of the scale, followed by a quantitative approach to test the construct validity and reliability of the scale items. Ten students, one teacher trainer specialized in SB use, three teachers experienced in SB use, and a language expert participated in the qualitative part. Data from 203 elementary students from two local schools in Malatya, Turkey, were used to test the psychometric properties of ‘smart board attitude scale’ (SBAS). The exploratory factor analysis (FA) yielded a two-factor model with 10 items. The goodness of fit indices produced by confirmatory FA confirmed the fit of the model to the data. Reliability of SBAS was also proved through multi-analyses.     

Is there more to email negotiation than email? The role of email affinity

Email has profoundly influenced the way we communicate personally and professionally and, for many, email negotiations have become a common, every day experience. While many studies have investigated email negotiations by relying on and discussing the characteristics of the medium, this paper focuses on the user’s attitude toward the medium and its respective influence on email negotiation. Specifically, we investigate which dimensions make up negotiators’ attitude toward email, i.e. their email affinity, and how these attitudes, in turn, influence the negotiation outcomes. In our scale development, three facets of email affinity are theoretically considered, empirically explored and validated: email preference, email comfort and email clarity. Our negotiation study contains a quasi-experimental email negotiation exercise where subjects were paired according to their email affinity. Email comfort emerged as a significant predictor of individual profit, joint gain, and different dimensions of subjective value. Theoretical implications and further research are discussed.     

贵州广播电视台播出建设思路以及对未来播出的思考

本文从总体架构、业务流程、网络架构、关键点设计这几个建设要点进行阐述，介绍了贵州广播电视台的播出建设思路；同时通过引入4K播出、IP化、超融合架构、全媒体发布等前沿技术，进行对未来播出技术架构的展望。     

How Modifying Third‐Party Information Affects Interpersonal Impressions and the Evaluation of Collaborative Online Media

Previous research has drawn upon warranting theory to help explain how viewers evaluate people and entities online. Extending previous research, this study assesses how the ability of a target to modify third‐party information affects perceptions of warranting value, and in turn, interpersonal impressions and the perceived legitimacy of online media that host evaluations. Additionally, this work explores how the perceived objectivity of a third‐party evaluator affects impressions in online settings. The results provide support for warranting theory and help clarify how impressions are formed in online environments when people have the ability to generate and modify content collectively. The theoretical implications this study has for warranting theory and future research directions are discussed.     

Media as Educator,Media as Disruptor: Conceptualizing the Role of Social Context in Media Effects

We document how social contexts serve to refract media effects. We theorized the relationship between media use and individual‐level knowledge (and attitude) would be stronger when community‐level knowledge (and attitude) was low than when it was high. Data come from a national survey (N = 12,608 women and 1,237 men) conducted in Nepal. Knowledge and stigma toward people living with HIV were the 2 dependent variables. Hypotheses were tested 12 times: across the use of 3 media (newspaper, radio, television) × 2 study outcomes (knowledge and attitudes) × 2 genders. Predicted interactions were supported in 9 of the 12 tests. Findings point to the need to take into account the role of community factors in theorizing about media effects.