M. Hedayatifard, R. Kheyroddin,
Volume 27, Issue 1 (6-2017)
Abstract
Because of the suitability of coastal lands for different groups of activities such as recreational, residential and commercial functions, there is an increasing demand among different stakeholders to benefit from these natural lands. The conflicts between the users, sometimes, lead to exclusiveness and limitation of public access to the shoreline. This article aims to recognize the main agents and mechanisms intensifying the spatial segregation and limitation of public access to the coast. By applying the qualitative methods of Interview and documentary analysis in the middle shoreline of Caspian Sea, the categorization of exclusive public shoreline, their supportive contexts and spatial outputs, are formulated. Findings show that in contrast to the privatization of publish shoreline throughout the world, in Iran, beside the role of private sector, it is the government who benefit from the shoreline exclusively. In order to find the role of institutional contexts, analyses of the formal and regulatory documents, laws and regulations, showed the negligence in performance of coastal and agricultural land use control systems which accelerate the processes of land use change and creation of exclusive spaces in the form of gated communities. In the last step, the analysis of interviews with key actors showed the unsuitable spatial consequences especially social segregation and also decline in economics of coastal cities.
H. Dadashpoor, N. Ghasemi,
Volume 27, Issue 2 (12-2017)
Abstract
Functional and structural changes of regional system are ongoing spatial changes that form patterns of spatial organization, depending on dominant regional forces and factors. Spatial structure of West Azerbaijan province experienced significant changes during 15 years; thus, the present research aim to investigate the manner of spatial distribution of two variables of population and activity, and correlation of these variables with spatial structure of the province during the years from 1996 to 2011. Quantitative method was employed for this aim and urban rank-size index was used to analyze settlement pattern of West Azerbaijan province; Kernel density and Moran method was used to analyze population data; general and local Moran data were used to analyze activity data; and regression method was used to see the degree of correlation between these variables. The results showed that spatial structure of west Azerbaijan was monocentric in 1996 while the of spatial distribution trend of the population and activity indicated decentralization tending toward clustered spatial pattern during 15-year period of time, due to high correlation between the given variables. In other words, some kinds of decentralized convergence took place. Such trend would change the spatial structure in West Azerbaijan province and needs to be properly oriented in the future planning of urban and regional development.
Mehdi Ziaei, Hashem Dadashpoor,
Volume 31, Issue 1 (1-2021)
Abstract
Over the last two decades, the focus of studies on the spatial organization of urban systems has shifted noticeably from classical theories such as “the central place theory” to utilizing novel theories based on the network essence of intercity relations, such as “the central flow theory”. This field of urban research, which has emerged under the term “external urban relations”, has developed through integrating contributions from many disciplines. However, different methodological traditions and interdisciplinary contexts in which the research is conducted are leading to ambiguity in how we understand and measure intercity relations. This study systematically reviews and analyzes the body of this new literature. It does so by innovatively employing a scientometric mapping approach, which is a combination of bibliometric and citation network analysis methods. This review is based on a publication set of 145 papers published on the subject since 1995. The number of publications covered by the Web of Science (WoS) shows a significant increase in the most recent years. The current study identifies 20 papers as playing a pivotal role in the evolution of the literature on urban external relations. Furthermore, the results revealed five conceptualizations before the 1990s at the classical theories era, along with two renowned conceptualizations during the 1990s (the transition decade), which have had the most impact on changes in the metamorphosis of theoretical fundamentals. The present developments are influenced by a wide range of various concepts, methods, and empirical approaches. Two different subfields (schools) of thought known as “world/global cities”, and “polycentricity” are identified by systemically integrating traditional top-down and bottom-up review methods. Their different aspects were also discussed.
