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This study aims to investigate the pricing dynamics within a triple-channel supply chain. The publisher can sell printed books (p-books) through bookstores or online direct sales, and electronic books (e-books) are sold directly through the internet. The primary objectives include determining optimal wholesale and final prices for p-books, assessing the profitability of introducing e-books, comparing profits across channels and supply chain modes and identifying optimal demand volumes.

The research uses first-order derivatives and the Stackelberg game to analyze the pricing strategies. Two supply chain modes, centralized and decentralized, are considered, and various parameters are examined to understand their impact on prices, demand volumes and final sales profit.

The results indicate that the e-book is either not published or is introduced simultaneously with the printed version in both modes. In the decentralized mode, the wholesale price of a p-book is equivalent to the final price in the bookstore channel in the centralized mode. One channel among the three selling channels is used to maximize the total profit in the centralized supply chain, whereas all demand should be fulfilled through either online direct sales or e-book channels in the decentralized mode.

This paper introduces a comprehensive triple-channel book supply chain model, considering cross-price sensitivities and lag times for e-books. The study provides insights into the dynamics of the book industry and compares them with existing literature, contributing to a broader understanding of the pricing strategies in a triple-channel context.

This study aims to determine the most similar set of recommendation books to the user selections in LibraryThing.

For this purpose, 30,000 tags related to History on the LibraryThing have been selected. Their tags and the tags of the related recommended books were extracted from three different recommendations sections on LibraryThing. Then, four similarity criteria of Jaccard coefficient, Cosine similarity, Dice coefficient and Pearson correlation coefficient were used to calculate the similarity between the tags. To determine the most similar recommended section, the best similarity criterion had to be determined first. So, a researcher-made questionnaire was provided to History experts.

The results showed that the Jaccard coefficient, with a frequency of 32.81, is the best similarity criterion from the point of view of History experts. Besides, the degree of similarity in LibraryThing recommendations section according to this criterion is equal to 0.256, in the section of books with similar library subjects and classifications is 0.163 and in the Member recommendations section is 0.152. Based on the findings of this study, the LibraryThing recommendations section has succeeded in introducing the most similar books to the selected book compared to the other two sections.

To the best of the authors’ knowledge, itis for the first time, three sections of LibraryThing recommendations are compared by four different similarity criteria to show which sections would be more beneficial for the user browsing. The results showed that machine recommendations work better than humans.

The purpose of this paper is to assess the satisfaction of teenagers who are suffering from or are exposed to social damages of children and young adults’ publications in Iran.

A descriptive surveys approach with practical purposes is applied here. The tools used in this study include two researcher-made questionnaires. Two sets of participants constitute the statistical populations: 120 and 50 teenagers who were affected by or are at the risk of social damages. Data collection from the first set was through census, while the same from the second set is through the disproportionate stratified random sampling method. Another statistical population is the group of premier children publishers during 2006-2016.

The teenagers’ satisfaction mainly is involved with: perceived quality, expectations and perceived value. “Music” and “Recreational and performing arts”, internet-based resources, “Electronic materials” and “Real stories” are ranked as having the highest mean value in information needs, formats and literacy genre among teenagers, respectively. The findings here indicate that the teenagers participated are satisfied with children publications to a great extent.

This is the first research which used the CSI Model for assessing the satisfaction of teenagers at risk and vulnerable to social damages.

The purpose of this study is to measure how effective television programs are in persuading teenagers to use public libraries.

This study is a descriptive survey. The statistical population includes all members of public libraries in the City of Isfahan aged between 12 and 16 years (N = 920). Using Cochran’s formula, the sample size was determined to be 270 individuals. The data were collected by a researcher-made questionnaire survey instrument whose validity was confirmed by Library and Information Science experts. Furthermore, the reliability of the questionnaire was confirmed via “Cronbach’s alpha” in the pilot test with 0.73. Having a return rate of 85.93 per cent, the authors were able to analyze 232 sets of responses.

Based on the authors’ findings, television programs are only able to satisfy the first stage of the model (i.e. Attention). So, its role in encouraging teenagers to use public libraries is not significant. Among the items of the model, “Desirability and interest in the program” and “Persuading teenagers to use public libraries” were found to be the most and least effective items, respectively, with average responses of 8.42 and 5.13. Moreover, television shows categorized as kids/teenagers were most likely to attract the target audience to libraries.

There is no any similar study in this scope, especially in the Middle East, where watching the television remains a mainstream activity for teenagers. It is for the first time that AIDA model is used for measuring the effectiveness of television programs in persuading teenagers to use public libraries in Iran.