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Simona Balbi Michelangelo Misuraca Germana Scepi 《Information processing & management》2018,54(4):674-685
Web 2.0 allows people to express and share their opinions about products and services they buy/use. These opinions can be expressed in various ways: numbers, texts, emoticons, pictures, videos, audios, and so on. There has been great interest in the strategies for extracting, organising and analysing this kind of information. In a social media mining framework, in particular, the use of textual data has been explored in depth and still represents a challenge. On a rating and review website, user satisfaction can be detected both from a rating scale and from the written text. However, in common practice, there is a lack of algorithms able to combine judgments provided with both comments and scores. In this paper we propose a strategy to jointly measure the user evaluations obtained from the two systems. Text polarity is detected with a sentiment-based approach, and then combined with the associated rating score. The new rating scale has a finer granularity. Moreover, also enables the reviews to be ranked. We show the effectiveness of our proposal by analysing a set of reviews about the Uffizi Gallery in Florence (Italy) published on TripAdvisor. 相似文献
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The structure and evolution of industrial clusters: Transactions, technology and knowledge spillovers 总被引：2，自引：0，他引：2
In this paper, we investigate the relationship between location patterns, innovation processes and industrial clusters. In order to do this we extend a transactions costs-based classification into a knowledge-based taxonomy of clusters, along the lines suggested by a critical revision of the main assumptions underlying most of the existing literature on spatial clusters. Our arguments show that the transactions costs approach and the innovation and technological regimes framework are broadly consistent, and that real insights into the microfoundations, nature, and evolution of clusters can be provided by these classification systems. 相似文献
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Increasing sport participation has been identified as a key vehicle for achieving World Health Organisation guidelines for health-enhancing physical activity (HEPA). A policy challenge is to promote this changed behaviour. Making use of the Active People Survey, a zero-inflated ordered probit model is used to identify the covariates of sport participation for males and females with respect to the related decisions to either participate in sport or not, and to participate at either lower or higher than desired intensity. To inform current policy emphases, the Active Places Survey is also used to examine the causal impact of facility provision on these behaviours. Results indicate that females are more likely to adopt less intensive activity even with time available. Families could place most constraints on females, but also reduce the intensity of male participation. Education has a greater association with higher intensity female activity. The largest effects are identified for sport club membership and facility satisfaction. Both of these affect male intensity of activity most. The main policy challenges facing sport in contributing to HEPA are shown to involve retaining male intensity of participation when ageing and encouraging greater female intensity of participation, with more appropriate matching of facilities. 相似文献
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Propaganda and Censorship for the 1984 Los Angeles Olympic Games: The Internal Politics of Ceausescu
Simona Petracovschi 《国际体育史杂志》2016,33(16):2046-2058
The aim of this paper is to present an overview of the USSR boycott of the 1984 Olympic Games and Nicolae Ceausescu’s decision to send the Romanian Olympic team to Los Angeles, from an internal politics perspective. All the existing analyses study the situation from the perspective of international relations but the aim of this paper is to analyze the ways that Ceausescu incorporates this decision into his own ideology and how the Romanian people were informed. The sports news was published in the newspaper Sportul and some in Scanteia (‘The Official Newspaper of the Central Committee of the Romanian Communist Parti’). We will analyze all the relevant material from January until the end of August 1984 and will focus on the characteristics of propaganda and censorship used to convince the population about Ceausescu’s reasons to participate at the Olympic Games despite the situation. Dominated by the idea of a ‘multilateral developed society’, Ceausescu incorporated sport as part of this ideology and in the case of the 1984 Los Angeles Olympic Games, he manipulated the population through the media in a particular manner, centred on his ‘cult of personality’. 相似文献
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Although some evidence indicates that even very young children engage in rudimentary forms of strategic behavior, the underlying mechanisms remain largely unknown. This study tested the hypothesis that uncertainty monitoring underlies such behaviors. Three‐, four‐, and five‐year‐old children (N = 88) completed a perceptual discrimination task. Results indicated that children are more likely to withhold (vs. volunteer) responses on trials for which, when forced to provide an answer, they report subjective uncertainty (vs. subjective certainty). Furthermore, uncertainty monitoring positively predicted the strategic regulation of accuracy via withholding of incorrect responses, even when controlling for individual differences in inhibitory control. Overall, results suggest that children's awareness of their own knowledge states contributes to early strategic behavior. 相似文献
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教育政策和实践总是处在困境之中,这是困扰政策制定者和实践者的问题.本文着力从教育政策和实践所面临的困境、如何处理困境的角度,重新审视政策和实践两者的关系,并从政策目标、政策工具和实践中的能力三方面对其展开论述,以期在冲突的基础上促进教育政策和实践间的融合. 相似文献
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Adina Simona Zemanek 《Culture, Theory & Critique》2018,59(2):119-138
ABSTRACTThis paper, based on textual analysis and interviews, offers a complementary perspective of scholarly studies of nation branding which focus on the state and corporate elites involved in such undertakings. It places grassroots initiatives in branding Taiwan through tourist souvenirs and other video and graphic materials against the larger background of cultural policies and official branding campaigns, and shows grassroots actors’ complex entanglement with official institutions, policies and discourses despite declared scepticism towards the latter and a low degree of direct collaboration. It compares official and grassroots messages and argues that the latter are more coherent; capture a local specificity and encourage a tourist gaze centred around the ‘human touch’ theme; distance themselves from China, the significant ‘other’ of Taiwanese nationalism; and markedly highlight an epistemological and representational strategy based on individual, sensorial experience, which may constitute a response to biased and untrustworthy state national narratives of the martial law era. 相似文献
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The present research investigated the link between perceived event memorability and false-event rejection. In 2 studies, event salience, plausibility, and recency were manipulated. Study 1 showed that high-salience events elicited higher memorability ratings than low-salience events for 5-, 7-, 9-year-olds and adults. Plausibility and recency affected only 9-year-olds' and adults' judgments. Study 2 demonstrated that younger versus older children and adults were less likely to reject false events, and that older children and adults were more likely to reject false events based on salience than were younger children. High-recency false events were more likely to be rejected than low-recency false events. Consistent with prediction, recency moderated the effect of salience. The development of metamemorial awareness and rejection strategies is discussed. 相似文献
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