if we think of the graph as modeling a network, the vulnerability measure the resistance of the network to disruption of operation after the failure of certain stations or communication links. many graph theoretical parameters have been used to describe the vulnerability of communication networks, including connectivity, integrity, toughness, binding number and tenacity.in this paper we discuss...

1-introduction one of the problems that is important in the waste management is the topic of waste rural landfill site selection and latex resulting from that in rural areas. the latex can be because groundwater pollution the contamination vulnerability and groundwater protection assessment has proved to be an effective tool for the delineation of protection zones in area affected by groundwate...

the occurrence of natural and human disasters can create heavy casualties in cities and urban areas and such a critical issue makes it inevitable to pay a great deal of attention to the vulnerability and safety aspects of cities and the accessibility to the urban welfare standards from the perspective of passive defense. the geostrategic location of koohdasht city in iran and its vulnerability ...

introduction nowadays, the vulnerability of human’s dwellings to the natural disasters has been steadily increasing as the results of the population centralisation. economic activities in vast and dense regions and disorganised and irregular conditions of dwellings in which the low-income dwellers of urban and rural areas live. the scale of damage caused by a crisis is not only related to its d...

the issue of this paper is the relationships between inflation rate , unemployment rate and production, one of the main discussions in macroeconomic models. this 'paper is an effort 'to determine the relationship between the above- mentioned phenomenon in the short-and in the long 11m as well as to calculate the natural rate of unemployed in iran. for this purpose, the theoretical mod...

due to simple operation and no needs for expensive infrastructure construction to convey water from a source to farm lands, groundwater becomes the most important sources of agricultural water supply in iran. however, the contamination of aquifers is a major concern in many countries, specifically in areas without effective groundwater protection and management. therefore, groundwater vulnerabi...

â â â â â korea’s youth unemployment problem has continued to worsen since 2004. according to an e24, j64, an analysis of raw data from statistics korea’s economically active population survey and supplementary results of the economically active population survey on youths to confirm whether youth unemployment affects all youths, more youths were delaying graduation or taking leaves of abse...