the length-weight relationships for three fish species from beheshtabad river, karun river drainage (western chaharmahal and bakhtiari provinces, iran) were investigated. the values of the slope parameter ( b ) in the length-weight relationship equations were determined as 2.79 for capoeta damascina , 3.10 for chondrostoma regium and 3.09 for oncorhynchus mykiss , all of which were significantl...

Drought is a natural hazard that has significant impact on economic, agricultural, environmental, and social aspects. In the present study details analysis of rainfall data has been carried out for the years 1981-2011. Standard precipitation index (SPI) has been used to evaluate the precipitation deficit in the Karun watershed of Iran. The results indicated that 1981-82,82-83,83-84,84-85,88-89,...

The Photovoltaic modules installed on the surface of water are naturally cooled, reducing loss thermal power generation. Floating photovoltaic systems (FPVS) combine existing with a floating structure to generate clean energy. To meet growing electricity demand, FPV will be integrated alongside dams enhance sources. results indicate that investment toward installing over dams’ reservoirs leads ...

This paper discusses Betty’s Brain, a teachable agent in the domain of river ecosystems that combines learning by teaching with self-regulation mentoring to promote deep learning and understanding. Two studies demonstrate the effectiveness of this system. The first study focused on components that define student-teacher interactions in the learning by teaching task. The second study examined th...

This paper examines the response of voters to candidates who have reported that they have criminal charges against them, within the framework of a simple analytical model which assumes that criminal charges give rise to some stigma amongst the electorate, and result in a negative effect on vote shares. Campaigning, the cost of which is borne from candidates’ wealth, helps a candidate to increas...

UNLABELLED Simple and concise representations of protein-folding patterns provide powerful abstractions for visualizations, comparisons, classifications, searching and aligning structural data. Structures are often abstracted by replacing standard secondary structural features-that is, helices and strands of sheet-by vectors or linear segments. Relying solely on standard secondary structure may...

Drought is a natural hazard that has significant impact on economic, agricultural, environmental, and social aspects. In the present study details analysis of rainfall data has been carried out for the years 1981-2011. Standard precipitation index (SPI) has been used to evaluate the precipitation deficit in the Karun watershed of Iran. The results indicated that 1981-82,82-83,83-84,84-85,88-89,...

Abstract Recorded ground accelerations at various locations of Karun III Dam during November 20, 2007, were recorded by an array accelerometers located on the dam. In terms amplitude and phase, these show non-uniformities in different elevations. this paper, effect non-uniform motions seismic response dam taking dam-reservoir-foundation interaction into account is investigated. The EACD-3D-2008...

Drought is a natural hazard that has significant impact on economic, agricultural, environmental, and social aspects. In the present study details analysis of rainfall data has been carried out for the years 1981-2011. Standard precipitation index (SPI) has been used to evaluate the precipitation deficit in the Karun watershed of Iran. The results indicated that 1981-82,82-83,83-84,84-85,88-89,...