RS
Alireza Homayunfar; Khalil Valizadeh Kamran; Mostafa Mousapour
Abstract
The purpose of this research is to compare the efficiency of Pixel-Based kernel functions on the support vector machine algorithm and Object-Based fuzzy operators in the extraction of built-up land in Hamedan. For this purpose, the Sentinel 2 satellite multi-spectral image with a spatial resolution of ...
Read More
The purpose of this research is to compare the efficiency of Pixel-Based kernel functions on the support vector machine algorithm and Object-Based fuzzy operators in the extraction of built-up land in Hamedan. For this purpose, the Sentinel 2 satellite multi-spectral image with a spatial resolution of 10 meters has been used. ENVI software was used for image preprocessing and Pixel-Based classification, and eCognation software was used for Object-Based classification. In the processing stage, first, in the ENVI software environment, training data and ground truth points were determined, and then using support vector machine kernel functions, including linear, polynomial, radial, and sigmoid basis functions, the class process The pixel-based classification was done and then the classification accuracy of the pixel-based method was evaluated. In the environment of eCognation software, segmentation operation was done with a certain scale, shape factor, and compression factor, and then using object-oriented fuzzy operators including AND, OR, MGE, MAR, MGWE and ALP, the classification process was performed. The object-Based fuzzy classification was also performed and the accuracy of each of the maps produced by the Object-Based method was also calculated. Producing a map of built-up urban lands with better accuracy using satellite images justifies the innovative aspect of this research. In this research, the AND fuzzy operator had the highest amount of accuracy in the produced maps, which indicates that by using Object-Based processing of satellite images, more accuracy can be achieved in the production of urban built-up lands.
Geography And Urben Planning
Somayeh Hatefi Shojae; Ali Akbari; Mahta Tari
Abstract
Hamedan with a long history in Iranian urban planning, has a relatively large bazaar.Mirzakazem Caravanserai and Golshan sara are among the most important caravanserais in Hamedan, which are important due to their location next to the historic bazaar of Hamedan, the commercial center of cities such as ...
Read More
Hamedan with a long history in Iranian urban planning, has a relatively large bazaar.Mirzakazem Caravanserai and Golshan sara are among the most important caravanserais in Hamedan, which are important due to their location next to the historic bazaar of Hamedan, the commercial center of cities such as Zanjan, Kurdistan and Kermanshah.Considering the Importance of the Whole of architecture and the creation of living and living spaces, Christopher Alexander's living centers theory explores the pattern of living structures in accordance with the concepts of integrated universality and strong centers in the form of 15 features.This paper responds to the following question with descriptive analytical methodology, qualitative approach and library documents: What is the physical structure of the traditional Hamdan bazaar consistent with Alexander's theory?Many studies have been carried out in various sectors of the traditional bazaar and the concepts of the theory of living centers of Christopher Alexander with 15 features in various topics, including the castle of Gourtan, Iranian garden and Tabriz Rab’e Rashidi have been examined and the physical study of traditional bazaar in the form of concepts of the theory of living centers is a subject that has a history does not have. The results of the research confirm that the traditional Hamedan bazaar is consistent with the characteristics of this theory, and Golshan's camp has the highest symmetry, contradiction, echo, and integrity of the physical life of Mirza Kazem. The comparison of the geometric structure of the buildings and the fifteen characteristics of Alexander's live structures model shows that the role of the centers of strong, intermittent repetition, contradiction, separation of gravity, free space and boundaries in the structure of the buildings is greater.
Geography And Urben Planning
somayeh hatefi shojae
Abstract
The purpose of this study was to assess the qualitative components affecting the security of urban thoroughfares in the central roads of Hamedan and the method for so doing was descriptive-analytical. A researcher-made questionnaire was used to collect research data. The reliability of the instrument ...
Read More
The purpose of this study was to assess the qualitative components affecting the security of urban thoroughfares in the central roads of Hamedan and the method for so doing was descriptive-analytical. A researcher-made questionnaire was used to collect research data. The reliability of the instrument was confirmed by Cronbach's alpha test with a coefficient of 0.74. The statistical population was shopkeepers and passers-by in the area. Due to the uncertainty of the number of the study population, 384 people were determined as the sample size using the Cochran uncertain statistical population formula. The study of security in the streets of Hamadan is a subject that has no background and its results are complementary to the previous studies that Izadi and Haghi have dealt with in Imam Square of Hamadan.The results showed that Bouali Street has the highest security compared to the other five passages. In this street, activity and land use with 0.87 operating load was the highest position. Other streets in terms of security conditions were Shariati Street (activity and land use with 0.72), Takhti Street (activity and land use with 0.66), Babataher Street (activity and land use with 0.63), Shohada Street (role of social supervision with 0.48) and Ekbatan Street (role of readability with 0.42). The results indicated that the factor of activity and land use had the greatest impact on the security of urban roads in Hamedan.
Geography And Urben Planning
yaser Hatami; Kianoosh Zaker Haghighi; Hadi Rezaeirad
Volume 9, Issue 17 , June 2018, , Pages 75-90
Abstract
The purpose of this study was to evaluate and measure the impact of environmental characteristics and socio-economic characteristics of the functional axis on the citizens' travel pattern in Hamedan city. The type of research is applied and its method is descriptive-analytical. Sample size for three ...
Read More
The purpose of this study was to evaluate and measure the impact of environmental characteristics and socio-economic characteristics of the functional axis on the citizens' travel pattern in Hamedan city. The type of research is applied and its method is descriptive-analytical. Sample size for three functional axes (Shariati, Mirzadeh Eshghi, Sa'idieh) was determined in Hamedan region using Cochran formula (225, 290 and 265) respectively. Simple random sampling method was used. SPSS software was used to analyze the data. The results of this study showed that, apart from the characteristics and environmental characteristics of the axes and functional corridors in the spatial structure of the city, hidden factors such as socio-economic features of functional axes play a decisive role in the formation of the patterns of displacement. According to research findings, the effect of environmental characteristics on the citizens' journey pattern in these axes is more than the impact of economic and social characteristics. As a result, due to this function and related travel pattern (public transportation) as well as the influential environmental characteristics (travel distance-travel length), it is possible to provide a public transportation system in these axes and extend it to other axes.
