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  • 1
    Language: English
    In: Computers in Human Behavior, July 2017, Vol.72, pp.152-162
    Description: In response to concerns that modern computer usage habits are having a deleterious effect on cognitive functioning, a study was designed to investigate the relationship between three dimensions of computer usage behaviour and two cognitive abilities: sustained attention and cognitive reflection. Trait mindfulness was incorporated as a potential protective factor for decline in cognitive functioning. A sample of 155 adults was recruited anonymously via Internet sources to complete a computer usage questionnaire, the Mindful Attention Awareness Scale, the Cognitive Reflection Test and the Mackworth Clock Vigilance Test. Hierarchical regression models were generated for criterion variables cognitive reflection and sustained attention, with 7 predictors entered in three steps: (a) demographics (age, gender, education); (b) computer usage behaviour (daily computing hours, daily computing sessions, mobile use percentage); and (c) trait mindfulness. Computer usage behaviour and demographics accounted for 12.4% of the variance in sustained attention, with a significant 11.6% uniquely predicted by computer usage behaviour. For cognitive reflection, 13.5% of the variance was explained by combined computer usage and demographics, with a significant 7.4% of unique variance explained by computer usage. Computing hours and computing sessions were significant individual predictors of sustained attention, whereas computing hours, mobile use percentage and gender were significant predictors of cognitive reflection. Trait mindfulness did not significantly contribute to the predictive power for either model, suggesting it is not a protective factor for sustained attention or cognitive reflection. Findings are discussed in relation to dual-process theory, the Baddeley and Hitch working memory model and contemporary social commentary.
    Keywords: Sustained Attention ; Cognitive Reflection ; Computer Use ; Smartphone Use ; Dual Process Theory ; Mindfulness ; Computer Science ; Psychology
    ISSN: 0747-5632
    E-ISSN: 1873-7692
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  • 2
    Language: English
    In: Journal of Environmental Management, 15 June 2018, Vol.216, pp.32-40
    Description: Monitoring of the gas and leachate parameters in a closed landfill is a long-term activity defined by national legislative worldwide. Serbian Waste Disposal Law defines the monitoring of a landfill at least 30 years after its closing, but the definition of the monitoring extent (number and type of parameters) is incomplete. In order to define and clear all the uncertainties, this research focuses on process of monitoring optimization, using the closed landfill in Zrenjanin, Serbia, as the experimental model. The aim of optimization was to find representative parameters which would define the physical, chemical and biological processes in the closed methanogenic landfill and to make this process less expensive. Research included development of the five monitoring models with different number of gas and leachate parameters and each model has been processed in open source software GeoGebra which is often used for solving optimization problems. The results of optimization process identified the most favorable monitoring model which fulfills all the defined criteria not only from the point of view of mathematical analyses, but also from the point of view of environment protection. The final outcome of this research - the minimal required parameters which should be included in the landfill monitoring are precisely defined.
    Keywords: Landfill Monitoring ; Optimization ; Linear Programming ; Environmental Sciences ; Economics
    ISSN: 0301-4797
    E-ISSN: 1095-8630
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  • 3
    Language: English
    In: Cognitive Therapy and Research, 2014, Vol.38(2), pp.172-188
    Description: There is growing evidence that cognitive bias modification procedures targeting attention (CBM-A) can alter anxiety reactivity in the laboratory, and also can yield therapeutic benefits for clinically anxious patients. These promising findings underscore the need for investigators to delineate the conditions under which CBM-A procedures are effective. In the present research we conducted two studies to empirically determine whether CBM-A continues to be effective when participants are informed of the training contingency and instructed to actively practice the target pattern of attentional selectivity. These studies were designed to address two key questions relating to this issue. First, if participants are informed of the training contingency and instructed to practice the target pattern of attentional selectivity, then will the CBM-A manipulation still effectively modify attentional response to negative information? Second, if it does still modify attentional response to negative information under these conditions, then will this change in attentional selectivity still serve to alter anxiety responses to a stressful experience? The results indicate that when participants are informed of the training contingency and instructed to practice the target pattern of attentional selectivity, then the CBM-A manipulation continues to exert an impact on attentional selectivity, but this modification of attentional bias no longer affects anxiety reactivity to a subsequent stressor. We discuss both the theoretical and practical implications of these findings.
    Keywords: Attentional bias modification ; Anxiety ; Explicit information ; Practice instruction
    ISSN: 0147-5916
    E-ISSN: 1573-2819
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  • 4
    Language: English
    In: Applied Economics, 07/27/2018, Vol.50(34-35), pp.3702-3717
    Description: With a rapid rise of text-based social media and online Word-of-Mouth (WOM) activity, millions of people express their thoughts and opinions on a variety of topics. Considering that nowadays WOM is a most influential source of information when guiding consumers' choice and purchase decisions, in this paper we look at the relationship between Twitter messages (tweets) and cinema box office revenues. Using static and dynamic panel data regression approaches, we show that the frequency, sentiment and timing of tweets posted about a film are correlated to different extent with the movie's box office revenues, with negative tweets being particularly damaging to the box office revenues. From a managerial perspective, this is important to know, such that film production companies and distributors can adjust their strategy accordingly.
    Keywords: Social Media (Twitter) ; Cinema Box-Office Sales ; Panel Data Models ; M30 ; C33 ; C53 ; C55 ; Economics;
    ISSN: 0003-6846
    E-ISSN: 1466-4283
    Source: Informa - Taylor & Francis (via CrossRef)
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  • 5
    Language: English
    In: Cell, 15 December 2016, Vol.167(7), pp.1674-1676
    Description: Using induced pluripotent stem cells, Ang et al. elucidate how a mutation in the transcription factor GATA4 causes congenital heart disease. They find that, although the recruitment of GATA4 to cardiac super-enhancers is retained, it no longer functions in partnership with another key transcription factor, leading to misexpression of non-cardiomyocyte genes. Using induced pluripotent stem cells, Ang et al. elucidate how a mutation in the transcription factor GATA4 causes congenital heart disease. They find that, although the recruitment of GATA4 to cardiac super-enhancers is retained, it no longer functions in partnership with another key transcription factor, leading to misexpression of non-cardiomyocyte genes.
    Keywords: Biology
    ISSN: 0092-8674
    E-ISSN: 1097-4172
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  • 6
    Language: English
    In: Ecological Modelling, Oct 10, 2015, Vol.313, p.201(11)
    Description: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.ecolmodel.2015.06.032 Byline: Aggeliki Kaloveloni, Thomas Tscheulin, Ante Vujic, SneA3/4ana Radenkovic, Theodora Petanidou Abstract: * Current species richness in S, central and NW Balkans were predicted to be highest. * Mountainous species were predicted to be the most threatened by climate change. * Forecasted future species richness was highest in the S and NW Balkans. * Southern Balkans were forecasted to experience the lowest species turnover. Author Affiliation: (a) Laboratory of Biogeography & Ecology, Department of Geography, University of the Aegean, 81100 Mytilene, Greece (b) Department of Biology and Ecology, University of Novi Sad, Trg Dositeja Obradovica 2, Novi Sad 21000, Serbia Article History: Received 27 October 2014; Revised 19 June 2015; Accepted 22 June 2015
    Keywords: Animal Taxonomy – Environmental Aspects ; Global Temperature Changes – Environmental Aspects
    ISSN: 0304-3800
    Source: Cengage Learning, Inc.
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  • 7
    Language: English
    In: Educational Researcher, March 2013, Vol.42(2), pp.70-77
    Description: In this article, we look at the barriers to international student mobility, with particular reference to the European Erasmus program. Much is known about factors that support or limit student mobility, but very few studies have made comparisons between participants and nonparticipants. Making use of a large data set on Erasmus and non-Erasmus students in seven European countries, we look at the barriers for participation. Results reveal the overall impact of financial barriers but suggest that it is personal barriers that help us to better differentiate between Erasmus and non-Erasmus students. The analysis suggests a two-pronged approach to increase participation: one focusing on better information and communication and the other stressing the benefits of Erasmus mobility.
    Keywords: Decision Making ; Higher Education ; International Education ; International Studies ; Regression Analyses ; Education
    ISSN: 0013-189X
    E-ISSN: 1935-102X
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  • 8
    In: Journal of the Science of Food and Agriculture, June 2013, Vol.93(8), pp.1996-2001
    Description: Byline: Jovana VuAkovic, Marija BodroA3/4a-Solarov, Aura Vujic, Aleksandra BoAarov-StanAic, Ferenc Bagi Keywords: spelt; hulls; kernel; HPLC; AOH; AME Abstract Background Since there is an increasing demand on the world market for alternative crops suitable for organic production, spelt wheat (Triticum aestivum spp. spelta L.) is a highly attractive farming option. Alternaria species are widespread and infect a great variety of economically important crops. Certain species are known producers of mycotoxins. The aim of this study was to assess the protective effect of hulls covering the spelt kernels on Alternaria toxins. Results Alternariol (AOH) and alternariol monomethyl ether (AME) were evaluated in hulls and dehulled kernels after plant inoculation with one A. alternata and two different A. tenuissima isolates. Mycotoxins were determinated using high-performance liquid chromatography with dioade array detection. The detected levels of AOH and AME were four times higher in hulls compared to kernels in inoculation treatments. AOH was registered at levels ranging from 227 to 331A[micro]gkg.sub.-1 in dehulled kernels and from 433 up to 1647A[micro]gkg.sub.-1 in hulls. AME was predominant toxin detected in the range of 277 to 398A[micro]gkg.sub.-1 in dehulled kernels and from 1844 to 2183A[micro]gkg.sub.-1 in hulls, with highly significant difference to water control treatment. Conclusion Obtained results indicate the significantly higher concentrations of Alternaria toxins in hulls than in dehulled kernels which implicate the possible protective effect of spelt wheat hulls.A[c] 2012 Society of Chemical Industry Author Affiliation:
    Keywords: Spelt ; Hulls ; Kernel ; Hplc ; Aoh ; Ame
    ISSN: 0022-5142
    E-ISSN: 1097-0010
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  • 9
    Language: English
    In: Food Chemistry, 15 February 2014, Vol.145, pp.743-748
    Description: Gas chromatography with mass spectrometry was used for carrying out a qualitative analysis of the ethanol soluble flour extract of different types of cereals bread wheat and spelt and pseudocereals (amaranth and buckwheat). TMSI (trimethylsilylimidazole) was used as a reagent for the derivatisation of carbohydrates into trimethylsilyl ethers. All samples were first defatted with hexane. (In our earlier investigations, hexane extracts were used for the analysis of fatty acid of lipid components.) Many components of pentoses, hexoses and disaccharides were identified using 73 and 217 Da mass and the Wiley Online Library search. The aim of this paper is not to identify and find new components, but to compare sugar components of tested samples of flour of cereals bread wheat and spelt and pseudocereals (amarnath and buckwheat). Results were analysed using descriptive statistics (dendrograms and PCA). The results show that this method can be used for making a distinction among different types of flour.
    Keywords: Cereals and Pseudocereals ; Gc–MS ; Carbohydrates ; PCA ; Chemistry ; Diet & Clinical Nutrition ; Economics
    ISSN: 0308-8146
    E-ISSN: 1873-7072
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  • 10
    Language: English
    In: Psychological Reports, October 2019, Vol.122(5), pp.1946-1966
    Description: The objective of this research was to validate the Narcissistic Personality Inventory across different response formats, given that several factor structures were proposed, ranging from two to seven factors. The original forced-choice format of the Narcissistic Personality Inventory was given to 410 participants and a modified, i.e., Likert format was given to 423 participants from the general population, along with personality and other narcissism measures. The results showed that the five-factor model proposed by Ackerman et al. had the best model fit in both response formats and that a distinction between adaptive (Leadership, Vanity, and Superiority) and some aspects of maladaptive (Manipulativeness and Exhibitionism) narcissism factors could be established. However, the redundancy of items in certain factors could be problematic and further improvements of the Narcissistic Personality Inventory should include more indicators of some proposed factors, especially of Vanity.
    Keywords: Narcissism ; Narcissistic Personality Inventory ; Response Format ; Factor Structure ; Construct Validity ; Adaptive Narcissism ; Maladaptive Narcissism ; Psychology
    ISSN: 0033-2941
    E-ISSN: 1558-691X
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