Competition in the telecommunications market has significant benefits and impacts in various fields of society such as education, health and the economy. Therefore, it is key not only to monitor the behavior of the concentration of the telecommunications market but also to forecast it to guarantee an adequate level of competition. This work aims to forecast the Linda index of the telecommunications market based on an ARIMA time series model. To achieve this, we obtain data on traffic, revenue, and access from companies in the telecommunications market over a decade and use them to construct the Linda index. The Linda index allows us to measure the possible existence of oligopoly and the inequality between different market shares. The data is modeled through an ARIMA time series to finally predict the future values of the Linda index. The results show that the Colombian telecommunications market has a slight concentration that can affect the level of competition.

Based on the different cultural background, the dissertation mainly talks about the catering culture in the East and the West from the aspects of people’s concepts, eating ingredients, cooking methods, food names and table manners. Through the comparisons, it allows people to know more about the different eating habits and regional characteristics, which promote cross-cultural communication. In addition, China, as a country which is famous for her delicacies, is introduced chiefly. Then some popular restaurants or snack bars will be mentioned in order to analyze today’s food tendency. With the development of our society, the combination of the Eastern and Western food culture will still continue.

The present research focuses on researching the impact of the diverse communication media that facilitate or develop Student Motivation and Engagement in the educational systems of the states in the Gulf, especially Oman. The main goal of this work is to determine which type of method is most effective in encouraging students in view of cultural and technological factors present in the region. Comparisons using hypothesis testing and structural models which provided higher T value for Technology-Based Communication Methods (TBCM) and Human Face-to-Face Communication Methods (HFtFCM). Next, the research hypothesis H2 that TBCM has a direct positive relationship with SMaE was supported by the following regression coefficients: β = 0.177, t = 4.493; p = 0.000. On the other hand, there was no effect of HFtFCM on SMaE as indicated by a regression coefficient of 0.056 (p < 0.124) for this hypothesis and therefore, this hypothesis was rejected. The analysis using the mediator of Student Perception of Communication Effectiveness (SPoCE) only partly mediates TBCM and SMaE (β = 0.047, t = 3.737, p = 0.000). However, SPoCE was found not to moderate the relationship between HFtFCM and SMaE (β = −0.01, t = 1.125, p = 0.005). The present study underlines the efficiency of TBCM in the area of student engagement, while face-to-face conversation does not play significant part in this process. The obtain results conclude that, the traditional and technological evolution in the Gulf region supports the adoption of TBCM in educational systems. Such approaches support with the technological learning and likings of students, offering greater flexibility and engagement. Educational systems must highlight TBCM to better meet the growing needs of their student, while identifying that face-to-face remains important, though secondary, in energetic motivation.

Natural Protected Areas (NPAs) are critical for biodiversity conservation and ecological balance. These areas are not only refuges for wildlife but also pivotal in promoting sustainable tourism. Geoparks, a unique subset of NPAs, emphasize geological heritage, offering distinctive educational and recreational opportunities. This article explores the significance of Geoparks in Portugal for geotourism and assesses the accessible digital communication strategies of Portuguese Geoparks, emphasizing the analysis of pedagogical concerns. The study highlights the importance of online engagement in enhancing visitor experiences and promoting sustainable tourism practices.

The study aims to identify the effectiveness of social responsibility programs. More specifically, it seeks to identify the extent to which health institutions use social responsibility programs and to clarify the extent to which social responsibility programs succeed in achieving the goals of health institutions. The study sought to provide answers to the following questions: To what extent do health institutions use social responsibility programs? To what extent have social responsibility programs succeeded in achieving the goals of health institutions? The study used the descriptive analytical method, relying on the survey method. The study concluded with many results, the most important of which were the following: the effectiveness of social responsibility programs in marketing health services at the educational and age levels and the role of social media in marketing health services. The study recommended the necessity of providing an awareness dimension to marketing health services, with increasing training opportunities for workers in public relations departments in hospitals and health institutions to market health services, in addition to the necessity of conducting relevant research, studies, and surveys. Identify the activities that will help those working in the public relations department in health facilities with regard to identifying basic and influential needs and activities in directing successful health campaigns.