â â â  in the last years, have been accelerated increased the damages of landslides by natural and anthropogenic factors. one of the main solutions to decrease landslide hazards is avoid from prone areas. for this purpose, it is necessary to prepare the landslide susceptibility map. in this research, after field studies in the ilam dam basin, nine factors including slope gradient, aspect, eleva...

The high hillsides of the Tehran metropolis are prone to landslides due to the climatic conditions and the geological, geomorphologicalcharacteristics of the region. Therefore, it is vitally important that a landslide susceptibility map of the region be prepared. For thispurpose, thematic layers including landslide inventory, lithology, slope, aspect, curvature, distance to stream, distance to ...

The aim of this thesis is to study communication algorithms in networks where nodes and/or communication links fail in a random dependent way. In order to capture fault dependencies, we introduce the neighborhood fault, ranged fault, and swamping communication models. In the neighborhood fault model for arbitrary networks, damaging events, called spots, occur randomly and independently with pro...

A bipartite graph is bipancyclic if it contains a cycle of every even length from 4 to |V (G)| inclusive. It has been shown that Qn is bipancyclic if and only if n 2. In this paper, we improve this result by showing that every edge of Qn − E′ lies on a cycle of every even length from 4 to |V (G)| inclusive where E′ is a subset of E(Qn) with |E′| n− 2. The result is proved to be optimal. To get ...

DESIGNING DISTANCE-PRESERVING FAULT-TOLERANT TOPOLOGIES By Sitarama Swamy Kocherlakota The objective of designing a fault-tolerant communication network (CN) is to maintain its functionality in the presence of failures. The approaches taken in designing fault-tolerant systems can be classified, in general, by the functionality criteria. There are two functionality criteria that have received mu...

the aim of this study is assessing and mapping landslide susceptibility in watershed of semiarid mountain areas. saeedabad-chai watershd is located on the northwest of iran and the north of sahand mountain. this study is using bivariate statistical analysis (bsa), weights-of-evidence (woe),gis. the results of this assessment show that causative factors as slope (∑wæ’= + 3.965), landuse(∑wæ’...

Bearings are widely used in rotating machines. Its health status is a significant index to indicate whether machines run continually or not. Detecting the bearing faults timely is very important for the maintenance decision making. In this paper, a new fault diagnosis method based on envelope analysis and Euclidean Distance is developed. Envelope analysis is used to enable the fault frequencies...

The aim of the relay coordination is that protection systems detect and isolate the faulted part as fast and selective as possible. On the other hand, in order to reduce the fault clearing time, distance protection relays are usually equipped with pilot protection schemes. Such schemes can be considered in the distance and directional overcurrent relays (D&DOCRs) coordination to achieve faster ...