فصلنامه نقشه و اطلاعات مکانی گیلان
سال دوم شماره 4 (پیاپی 5، زمستان 1396)

The present work analysed the model of real condition for water distribution network of Langarud city by Geospatial modeling. Hydraulic calculations and comparison of water supply model of Langarud city in two existing variants and proposed model emphasized the modification of existing water distribution model while implementing two cases of GAP1 and GAP2 rings around the city. Along with this operation in 5 stages, creation of independent pressure zone and isolated consumption areas in the network besides the intelligent pressure management through the system of remote reading and implementation of demand management in the form of water split reform were also considered.

In order to conduct this research, spatial and spatial proportionality of emergency rescue and rescue centers of Yazd city was carried out in 12 indicators. The indexes of the five-point Likert spectrum were performed. The relative weight of the indices was obtained from the AHP technique. Then, the layer and composite index were calculated using the Weighted Overlay model. The results of the research showed that none of the rescue and rescue centers of Yazd are in a fully compatible position, and many of the centers are in an indifferent and relatively incompatible position. Medical and educational centers are also suitable places for creating crisis management bases in Yazd and the largest area of the historical area is in the middle position and the smallest area is suitable for the situation. On the other hand, a significant part of the historical fabric of Yazd is destroyed. Accordingly, it can be said that the historical context of Yazd city in the event of an accident does not have the ability to manage the crisis appropriately.

In this research dynamic orbits of limited circular and elliptical three body problem in planar and three dimensional cases and also periodic orbits in planar case are calculated. For this purpose, equations of motion in limited three body problem with use of proper numerical integration method and specific primary conditions are calculated and the results are drawn into various orbits. The way of achieving to zero velocity surfaces which are determinant of allowed regions of motion, are another cases that are studied in this research.