درخت حوزه‌های تخصصی

Social media and social networking sites have become a vital part in everyone’s daily life and users of social networks are increasing. This study aims to review and highlight the importance of public libraries presence on social media, and public libraries crucial awareness on online marketing to market their various services, raise awareness and create a community according to each social media platform being used . This study focuses on helping public libraries in Saudi Arabia that lack the true understanding on how to implement social media as a part of their marketing plan, use social media features to create an online community and connect with their patrons to comprehend the basic marketing tools used online, and the benefits of public libraries online social presence and review previous public library marketing  implementations and methods through social media and social networking sites in building a community. Using a content analysis methodology, we reviewed the definition of marketing, marketing tools, social networking sites and previous library methods implemented on social media and the benefits of creating an online presence for libraries. We also highlighted the limitations facing libraries and an efficient method of social media engagement analysis. This study’s results indicate that public libraries in Saudi Arabia can enhance their online presence on social networking sites by implementing the correct content marketing method for each social media platform and the importance of training public library staff on the usage of social media to satisfy customer needs and therefore build a connection with patrons online which further more builds a community. organization, representation, realization and protection of interests and rights of citizens

Available research suggests using Blockchain in electronic medical files to aggregate and integrate information. While reviewing authoritative articles and books, we analyzed the challenges and opportunities of using Blockchain this way. By using the specialists' opinion, completing a specialist questionnaire, using the DEMETEL technique and interpretive structural modeling (ISM) technique, this research investigated and analyzed the possibilities of using Blockchain in electronic medical files. The pair comparison technique was used to study and analyze the challenges of using Blockchain this way. The results are stated in this research. Research achievements include the design of a model using Blockchain for electronic medical files, analysis of Block chain's opportunities and challenges, measurement of the components, design and presentation of the model, and prioritizing the challenges of using Blockchain. This research suggests that the use of Blockchain in electronic medical files can reduce extra costs, create a comprehensive system for medical records to avoid additional costs, facilitate access to patient information, and reduce medical errors. The results obtained reveal that the components of immutability and the impossibility of data forgery of patient records (based on data integration in Blockchain) have the most impact on the system. Examination of the challenges reveals that blockchain technology's challenges (low speed, difficulty working with Blockchain, poor integrations between the software for various electronic health records) are of the utmost importance.

The purpose of this study is to investigate and identify the periods of formation and bursting of speculative bubbles in Iran's capital market by creating a state space model and two-mode switching regime (mode 1 is bubble growth and burst stage and mode 2 is the time of bubble loss) during the period from April 2011 to March 2018. The Oxmetrics 7 software is used to investigate the existence of multiple bubbles and research objective. The results of the study of the state space switches confirm the bubble of the capital market in Iran during four periods in the research domain. The life span of the first speculative bubble is 2 months from October to November 2011, the second is 8 months from March to October 2013, the third is 3 months from December 2015 to February 2016, and the fourth period of bubble is 5 months from August to December 2017. Therefore, the result of the research stipulates that the stock index of the Iranian capital market in the realm of research time period has had 18 months of bubbles and has spent 66 months in balance.