فهرست مطالب akbar khalili

Gravity block type quay walls are one of the main options when the seabed has a suitable bearing capacity. Today, the design of quay walls is based on its seismic performance, and the pseudo-static method is the most common design method. In this method, the force caused by the earthquake is considered as the product of the equivalent acceleration coefficient in the effective mass of the structure. The choice of the value of this coefficient, consisting of horizontal (kh) and vertical (kv) components, is of great importance. Therefore, in this paper, the effect of selecting the earthquake equivalent acceleration coefficient on the seismic performance of the hunch-back quay wall of Pars Petrochemical Port has been studied as a case study. In this regard, the recommendations and relationships reflected in the old and new editions of the Japanese Maritime Codes (OCDI, 2002, 2009) are more comprehensive and complete than other codes, especially in the seismic design of berths. The results illustrated that the proposed relationships of horizontal earthquake acceleration coefficient (kh) based on the new version of the Japanese code is more suitable and helps predict the seismic performance of this type of quay walls more accurately and their realistic design. Moreover, in this research, based on acceleration time-histories resulted from seismic hazard studies at the site, using FLAC2D software, the values of horizontal displacement of the quay wall crown have been investigated, and based on that, earthquake coefficient values have been predicted for each relevant time-history.

As one of the sources of income and sustainable tourism, the tourism industry focuses on economic, social, and environmental issues. Accordingly, the main objective of this study was to design a policy package to achieve sustainable tourism development in Iran. The findings of this study can help with improving the tourism industry's performance, especially therapeutic tourism in Iran from local communities to the national level as well as the development of tourism by preserving the valuable assets of the country.

The qualitative research method was used due to its interpretive and natural approach to events, people, and topics. The research strategy was an exploratory multiple case study. After interviewing the participants in this study, who were 12 stakeholders of the industry and using the five-stage Yin model to analyze the collected data, the dimensions of the policy package of sustainable tourism development including strategies, short-term goals, long-term goals, and challenges were achieved.

Strategy themes included national support, national initiatives, and international initiatives. Themes of short-term goals included promotion of local tourism, cultural-educational development, internal and external marketing. Themes of long-term goals included sustainable economic development, revenue generation, and infrastructure development. Themes of challenges included the high cost of travel, low quality of service, Covid-19 pandemic, and lack of support for local businesses.

This study showed that the participants paid attention to economic, social, and environmental factors. The participants also required the government and other related sectors to promote medical tourism and to preserve and protect natural resources through principled investing, culturalization, and education. Paying attention to the issues mentioned by the participants and applying the policy package obtained in this research can help public and private managers and investors to preserve valuable natural resources, especially hot springs, and to develop the tourism industry.