Development of hybrid optimization algorithm for structures furnished with seismic damper devices using the particle swarm optimization method and gravitational search algorithm     

Najad Ayyash  Farzad Hejazi 《地震工程与工程振动(英文版)》2022,(2):455-474

Previous studies about optimizing earthquake structural energy dissipation systems indicated that most existing techniques employ merely one or a few parameters...  相似文献   

Geological and hydrological investigation of a water collection system in arid Jordanian lands     

S. A. Taqieddin  A. S. Al-Homoud  A. Awad  S. Ayyash 《Environmental Geology》1995,26(4):252-261

With the increase in population of developing and under developed countries, and with the availability of water resources strained and in many areas deficient, it is quite evident that water conservation and distribution programs need to be adopted on a scale far greater than any yet in use. This requires a more detailed evaluation and development of any water resource. In this study, the geology and geomorphology of the Safawi area northeast of Jordan and the climatic conditions were evaluated as an aid in determining the potential for the collection of surface water. The runoff coefficient, flood frequency, and runoff volumes from some selected valleys were determined through the use of the Soil Conservation Service (SCS) method and other known techniques. The results of this study indicated that the collection of surface water in this arid region is feasible. Estimates were made for the runoff coefficient and annual runoff volumes through the application of the accepted hydraulic engineering methods.  相似文献