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The purpose of this paper is to understand the reasons that hinder the use of digital libraries.

This study analyzed data obtained through a web survey sent to 14,763 faculty members in Brazilian universities. Of the 6,689 respondents, 1,075 (16.1%) reported not using the Capes digital library and 1,017 answered the questionnaire for non-users.

Results showed that the main reasons for non-use are lack of knowledge of the existence of the Capes digital library, use of other resources, preference for printed journals and difficulty of access. Eight factors of non-use were elicited: insufficient dissemination, inadequacies in contents, in infrastructure, in access policy, in training and in the interface, personal constraints and personal attitude. The reasons and factors for non-use were categorized as intrinsic and extrinsic to the digital library. Intrinsic reasons relate to characteristics of the Capes digital library. Extrinsic factors are influenced by user characteristics. The chi-square test demonstrated that the variables: area of knowledge, age, hours dedicated to research and computer skills influence non-use.

This study has contributed to research about non-users of digital libraries, differing from previous research by surveying a large-scale population and by investigating in a single work the reasons for non-use, other electronic sources used by non-users, advantages of using the digital library and intention of non-users to become users if barriers were removed. Qualitative data complemented the quantitative data collected which allowed a more complete picture of the respondent’s positions.

The effectiveness of a message to persuade tourists to consume healthier and more ecological food may be influenced by (1) the message content, (2) the message sender and (3) the receiver of the message. This study analyses effective persuasion of tourists by simultaneously investigating how these three characteristics influence tourists' healthy and ecological food choices at hotel buffets.

A randomised 4 × 2 between-subject experimental design, replicated in two hotels, collected perceptions of 329 participants on four persuasive messages aimed at increasing food consumption in a realistic and natural setting at hotel buffets. The eight treatments included four persuasive messages (placebo appeal, health appeal, environmental appeal, local origin appeal), each with and without endorsement (i.e. with/without a specific sender).

Message content, in particular health and local provenance-related messages, and the characteristics of the receiver (tourists' attitudes and habits) influence food choices on holiday while the sender (endorsement) was found to be less influential. This implies that appropriate messages can persuade tourists to eat in a considerate manner from hotel buffets, especially for tourists with favourable attitudes and everyday behaviours.

This paper contributes to theory and practice in persuasive communication to encourage healthier and more ecological choices in hedonistic consumption. Specifically, this paper is the first to present an integrated empirical analysis on the simultaneous influence of (1) message content, (2) presence of an identifiable sender and (3) receiver characteristics, on healthy and ecological eating behaviour of tourists.