Recently, secure query has become a significant issue for researchers. It proposes the concept of secure multi-party query in Internet of things or sensor networks making use of “ underground parties ” to guarantee network security. Based on a novel network model assumption, it adopts homomorphic privacy and secure multi-party computation techniques to realize the above mentioned secure query, ...

Earthquake and its catastrophic failures has been one of the disturbance worry of Civil Engineers. In geotechnical science, liquefaction is one of the most important phenomenons induced by earthquake. A change in pore water pressure follows a change in effective stress, and in a critical state in which pore water pressure equals the total stress in soil particles, soil strength is suddenly lost...

so far a number of works on the heat flux anomalies of the earth surface based on the satellite images and underground water as seismic precursors have been carried out. in this paper the soil temperature data at 1m depth (deep enough to filter temperature variation due to high frequency meteorological forcings) has been considered to see if there are connections between earthquakes in bam and ...

today, saving and storing water are among the most critical and important issues which have attracted the world's attention. history of storing water in the form of ghanat and water reservoir by iranians goes back to ancient times. studies on this field show that benefiting from underground dams was one of the methods employed for exploiting water in past times. in countries like iran, due...

nowadays, tunneling in urban areas is a common activity for a variety of transportations such as subways, water supply, lifelines andsewers that may require blast operations. the characteristics of stress waves of the blast are quite different from earthquake waves. the blast waves are usually of high frequency content, short duration, equality of amplitudes in horizontal and vertical direction...

nowadays, tunneling in urban areas is a common activity for a variety of transportations such as subways, water supply, lifelines andsewers that may require blast operations. the characteristics of stress waves of the blast are quite different from earthquake waves. the blast waves are usually of high frequency content, short duration, equality of amplitudes in horizontal and vertical direction...

A considerable amount of coal is lost due to the fires in underground/surface mines and it pollutes the natural environment because of the evolution of the pollutant gases like carbon monoxide, oxides of sulphur and nitrous fumes besides the unburnt hydrocarbons. Subsoil water loss in the area are severely damaging the strata. The movement of water overfire areas createfurther problems of low d...

Introduction: Studying the changes in surface water storage and exchanges with groundwater in the hydrological system of rivers is a prerequisite for water resources management in the basin. In this paper, Zayandehrood River has been studied and the historical series of flow has been used in six hydrographic stations located downstream the Zayandehrood Dam. Materials and Methods: Based on the ...

the evaluation and control of the trains induced vibrations needs even more attention in the case of underground tracks which passes near to monuments and historical sites. the rail corrugations which occur due to the wheels’ impulse loads during the operation period of underground railway tracks, usually amplify the ground borne noise and vibration. in the current study, the mentioned phenomen...