درخت حوزه‌های تخصصی

The present study aimed at investigating the physical security dimensions affecting the security of volleyball stadiums in Iran. The study employed a descriptive-exploratory research method conducted on 115 managers and officials in volleyball stadiums, presidents and experts of Provincial Volleyball Boards as well as experts in the field of sports facilities and events as well as sports violence and aggression. They answered a 20-itme Physical Security Assessment Questionnaire extracted from the adjusted Stadium Security Questionnaire (Faraji, 2014). The collected data were analyzed using exploratory and confirmatory factor analysis. The research findings indicated that physical security is one of the main factors affecting the security of volleyball stadiums in Iran. Control of toxic and chemical substances (0.91), internal control (0.90), peripheral environment control (0.70) and court entrance control (0.59) were considered as the most important factors of physical security on the security of volleyball stadiums (P <0.05). It seems that the strict implementation of the security inspection protocol for spectators, the adoption of appropriate security measures in the external environment of volleyball stadiums, the reform of the ticket sales system, and the use of new methods for distributing and selling tickets to control the court entrances can prevent spectators’ violent behaviors and increase their satisfaction. As a result, the security of volleyball stadiums can be fulfilled.

The innovation ecosystem plays a valuable role in the development of innovation and entrepreneurship. The emergence of an innovation-based economy requires the development of an innovation ecosystem in the context of the region. In most countries, especially less developed countries, the ecosystem is not properly formed and the first step to its formation is the theoretical and experimental knowledge of this area. Therefore, this study aims to investigate the dimensions and components of the innovation ecosystem. We applied bibliometric method, citation analysis, applied evaluation techniques and content analysis of documents in this research. The purpose of this research is to review studies in this field and to present a conceptual and integrated model using content analysis of documents by organizing previous research. The statistical population of this research includes all the documents presented in the Web of Science database with 438 documents related to the innovation ecosystem until 2020 and has been evaluated and illustrated using VOS viewer software. Based on the content analysis of the documents, research on the "innovation ecosystem" is divided into five sections. The first part of the research is related to the structural factors. The second part is related to the type of the relationships and interactions, and the third part is related to the results. The fourth part is about the actors and the fifth part is about how they have performed. Finally, the conceptual framework of the research is presented based on the content analysis of the documents