Thessaloníki, Greece
Thessaloníki, Greece

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Barkoukis V.,Aristotle University of Thessaloniki | Lazuras L.,South East European Research Center | Tsorbatzoudis H.,Aristotle University of Thessaloniki
Journal of Sports Sciences | Year: 2014

The present study set out to assess the impact of attributional beliefs about success on the susceptibility for doping use in adolescent athletes. The sample consisted of 309 adolescent athletes participating in both team and individual sports. Participants completed a battery of questionnaires including Beliefs about the Causes of Success in Sport Questionnaire (BACSSQ), current and past doping use, and measures of attitudes, norms, situational temptation and social desirability. Variance reduction rate analysis revealed that social desirability did not act as a confounder in the relationship between doping susceptibility and its predictors. With regard to beliefs about the causes of success dimensions, only deception emerged as a significant predictor of doping use susceptibility over and above the effects of well-established social-cognitive predictors of doping intentions and use. These findings imply that beliefs about the causes of success in youth sports may comprise another dimension of risk factors for doping susceptibility and use. © 2013 Taylor & Francis.


Barkoukis V.,Aristotle University of Thessaloniki | Lazuras L.,South East European Research Center | Tsorbatzoudis H.,Aristotle University of Thessaloniki | Rodafinos A.,University of Sheffield
Scandinavian Journal of Medicine and Science in Sports | Year: 2013

Doping use is an important issue in both competitive and non-competitive sports, and poses potentially irreversible health consequences to users. Scholars increasingly call for theory-driven studies on the psychosocial processes underlying doping use that will inform subsequent policy-making and prevention interventions. The aim of the study was to implement an integrative theoretical model to assess the direct and indirect effects of motivational variables, moral orientations, and social cognitions on doping intentions. A randomly selected and representative sample of 750 elite athletes anonymously completed a battery of questionnaires on motivational and moral constructs, and social cognitions related to doping. Hierarchical linear regression analysis and multiple mediation modeling were used. The effects of achievement goals and moral orientations were significantly mediated by attitudinal, normative, and self-efficacy beliefs, in both lifetime ever and never doping users. Moral orientations indirectly predicted the doping intentions of never users, but did not predict ever users' doping intentions. Achievement goals and sportspersonship orientations influence doping intentions indirectly, through the effects of attitudes and self-efficacy beliefs. Sportspersonship (moral) orientations were relevant to doping intentions among athletes with no prior experiences with doping, while achievement goals and situational temptation were relevant to both lifetime never and ever dopers. © 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.


Lazuras L.,South East European Research Center | Barkoukis V.,Aristotle University of Thessaloniki | Ourda D.,Aristotle University of Thessaloniki | Tsorbatzoudis H.,Aristotle University of Thessaloniki
Computers in Human Behavior | Year: 2013

Cyberbullying is an emerging form of aggression that utilizes information and communication technologies (ICTs). While cyberbullying incidents attract considerable attention, research on the causes and psychosocial predictors of cyberbullying is still limited. The present study used an integrated theoretical model incorporating empathy, moral disengagement, and social cognitions related to cyberbullying. Structured questionnaires were administered to 355 randomly selected adolescents (M = 14.7, SD = 1.20). Linear regression analysis showed that social norms, prototype similarity and situational self-efficacy directly predicted cyberbullying expectations. Multiple mediation modelling indicated that normative influences mediated the effects of moral disengagement and affective empathy on cyberbullying expectations. These findings provide valuable information regarding the effect of both distal and proximal risk factors for cyberbullying in adolescence, highlight the relationship between normative processes and moral self-regulation, and set the basis for related educational and preventive interventions. © 2012 Elsevier Ltd. All rights reserved.


Alvarez-Rodriguez J.M.,South East European Research Center | Labra-Gayo J.E.,University of Oviedo | Rodriguez-Gonzalez A.,Polytechnic University of Mozambique | De Pablos P.O.,University of Oviedo
Computers in Human Behavior | Year: 2014

The present paper introduces a method to promote existing controlled vocabularies to the Linked Data initiative. A common data model and an enclosed conversion method for knowledge organization systems based on semantic web technologies and vocabularies such as SKOS are presented. This method is applied to well-known taxonomies and controlled vocabularies in the business sector, more specifically to Product Scheme Classifications created by governmental institutions such as the European Union or the United Nations. Since these product schemes are available in a common and shared data model, the needs of the European e-Procurement sector are outlined to finally demonstrate how Linked Data can address some of the challenges for publishing and retrieving information resources. As a consequence, two experiments are also provided in order to validate the gain, in terms of expressivity, and the exploitation of this emerging approach to help both expert and end-users to make decisions on the selection of descriptors for public procurement notices. © 2013 Elsevier Ltd. All rights reserved.


Ketikidis P.,University of Sheffield | Dimitrovski T.,South East European Research Center | Lazuras L.,South East European Research Center | Bath P.A.,University of Sheffield
Health Informatics Journal | Year: 2012

The response of health professionals to the use of health information technology (HIT) is an important research topic that can partly explain the success or failure of any HIT application. The present study applied a modified version of the revised technology acceptance model (TAM) to assess the relevant beliefs and acceptance of HIT systems in a sample of health professionals (n = 133). Structured anonymous questionnaires were used and a cross-sectional design was employed. The main outcome measure was the intention to use HIT systems. ANOVA was employed to examine differences in TAM-related variables between nurses and medical doctors, and no significant differences were found. Multiple linear regression analysis was used to assess the predictors of HIT usage intentions. The findings showed that perceived ease of use, but not usefulness, relevance and subjective norms directly predicted HIT usage intentions. The present findings suggest that a modification of the original TAM approach is needed to better understand health professionals' support and endorsement of HIT. Perceived ease of use, relevance of HIT to the medical and nursing professions, as well as social influences, should be tapped by information campaigns aiming to enhance support for HIT in healthcare settings. © The Author(s) 2012.


Montes-Garcia A.,University of Oviedo | Alvarez-Rodriguez J.M.,South East European Research Center | Labra-Gayo J.E.,University of Oviedo | Martinez-Merino M.,Freews
Expert Systems with Applications | Year: 2013

The present paper introduces a context-aware recommendation system for journalists to enable the identification of similar topics across different sources. More specifically a journalist-based recommendation system that can be automatically configured is presented to exploit news according to expert preferences. News contextual features are also taken into account due to the their special nature: time, current user interests, location or existing trends are combined with traditional recommendation techniques to provide an adaptive framework that deals with heterogeneous data providing an enhanced collaborative filtering system. Since the Wesomender approach is able to generate context-aware recommendations in the journalism field, a quantitative evaluation with the aim of comparing Wesomender results with the expectations of a team of experts is also performed to show that a context-aware adaptive recommendation engine can fulfil the needs of journalists daily work when retrieving timely and primary information is required. © 2013 Elsevier Ltd. All rights reserved.


Ladas A.I.,South East European Research Center | Carroll D.J.,University of Sheffield | Vivas A.B.,University of Sheffield
Child Development | Year: 2015

Recent research indicates that bilingual children are more proficient in resolving cognitive conflict than monolinguals. However, the replicability of such findings has been questioned, with poor control of participants' socioeconomic status (SES) as a possible confounding factor. Two experiments are reported here, in which the main attentional functions and pragmatic ability of 54 bilingual and 56 monolingual low-SES children were assessed (Experiment 1: 6- to 12-year-olds; Experiment 2: 6- to 8-year-olds). A language-switching task was also employed, to measure bilingual proficiency. Overall, the monolingual and bilingual groups did not differ significantly in any of the tasks employed, although the ability to resolve conflict was related to children's level of bilingual experience. © 2015 Society for Research in Child Development, Inc.


Kourtesis D.,South East European Research Center | Alvarez-Rodriguez J.M.,South East European Research Center | Paraskakis I.,South East European Research Center
Future Generation Computer Systems | Year: 2014

Cloud Computing and Service Oriented Architectures have seen a dramatic increase of the amount of applications, services, management platforms, data, etc. gaining momentum for the necessity of new complex methods and techniques to deal with the vast heterogeneity of data sources or services. In this sense Quality of Service (QoS) seeks for providing an intelligent environment of self-management components based on domain knowledge in which cloud components can be optimized easing the transition to an advanced governance environment. On the other hand, semantics and ontologies have emerged to afford a common and standard data model that eases the interoperability, integration and monitoring of knowledge-based systems. Taking into account the necessity of an interoperable and intelligent system to manage QoS in cloud-based systems and the emerging application of semantics in different domains, this paper reviews the main approaches for semantic-based QoS management as well as the principal methods, techniques and standards for processing and exploiting diverse data providing advanced real-time monitoring services. A semantic-based framework for QoS management is also outlined taking advantage of semantic technologies and distributed datastream processing techniques. Finally a discussion of existing efforts and challenges is also provided to suggest future directions.©2013 Published by Elsevier B.V. All rights reserved.


Lazuras L.,South East European Research Center | Chatzipolychroni E.,University of Sheffield | Rodafinos A.,University of Sheffield | Eiser J.R.,University of Sheffield
Addictive Behaviors | Year: 2012

The present study assessed the effects of anticipated regret, social norms, and related social cognitions on smoking cessation intentions among indoor employees in a pro-smoking culture. Overall, 93 daily smokers completed anonymous structured questionnaires assessing attitudinal and health beliefs about tobacco use, social norms, quitting self-efficacy, and anticipated regret. Past quit attempts and tobacco dependence were also measured. Hierarchical linear regression and mediation analyses showed that attitudes toward quitting, self-efficacy and anticipated regret significantly predicted cessation intentions, over and above past quit attempts and tobacco dependence. Unlike in previous studies, tobacco dependence, descriptive norms and smoke-free policies did not directly influence quit intentions in our sample of smokers. Anticipated regret mediated the effects of attitudes and social norms on cessation intentions. © 2011 Elsevier Ltd.


Lazuras L.,South East European Research Center | Zlatev M.,South East European Research Center | Rodafinos A.,University of Sheffield | Eiser J.R.,University of Sheffield
International Journal of Public Health | Year: 2012

Objective: Identify the psychosocial variables that predict smokers' compliance with smoke-free policies at work, and non-smokers' assertiveness for smoke-free rights in Greek and Bulgarian workplaces. Methods: Data were collected from employees in Greece and Bulgaria. The main outcome measures were smokers' compliance with smoke-free policies, and non-smokers' assertiveness intentions. Demographic variables, tobacco use and dependence, as well as beliefs about second-hand smoke (SHS) exposure and smoking at work were also assessed. Results: Regression analyses showed that smokers' compliance with smoke-free policies was predicted by age, perceived health risks of smoking, and beliefs related to the benefits of smoking at work. Non-smokers' assertiveness was predicted by annoyance from exposure to SHS at work, and assertiveness-related social cognitions (e.g., attitudes, social norms, and self-efficacy). Conclusions: Interventions to promote support for tobacco control policies at work in Greece and Bulgaria may benefit from targeting smokers' beliefs about the actual effects of tobacco use on health and job performance. Accordingly, efforts to promote non-smokers assertiveness should build stronger assertiveness-related attitudes, convey anti-smoking normative messages, and strengthen self-efficacy skills. © Swiss School of Public Health 2012.

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