The redundancy allocation is one of the most important and useful problems in system optimization, especially in electrical and mechanical systems. The object of this problem is to maximize system reliability or availability within a minimum operation cost. Many works have been proposed in this area so far to draw the problem near to real-world situations. While in classic models the system com...

Simulation of Water Balance Components (WBCs) is import for sustainable water resources development and management. The Soil Assessment Tool (SWAT) a semi-distributed hydrological model to estimate the WBCs by forcing response unit (HRU) meteorological variables. developed simulates five viz. surface runoff, lateral flow, percolation, actual evapotranspiration soil at sub catchment level. To de...

to investigate the changes in yield and yield components of dry land wheat (triticum aestivum l. cv agosta), under the influence of residue and nitrogen levels and different tillage practices, a field experiment was conducted during the 2006-2007 growing season, in the agricultural research station of the college of agriculture, shiraz university, iran. the experiment was designed as a split-sp...

The construction supply chain network has been facing challenges in relation to reducing cost and delivery time, increasing the quality of built assets, environmental pollution. These issues have caused contractors project managers this industry note concept green management (GCSCM). This study examined most important barriers implementation GSCM industry. In paper, components sub-components GC...

We present new observations of the gravitational lens system CLASS B0128+437 made in the optical, infrared and radio regimes. HubbleSpaceT elescope observations detect only a very faint, extended object in I-band with no obvious emission from the lensed images visible; no detection at all is made in V -band. The lens system is detected with much higher signal to noise with UKIRT in K-band and, ...

purpose: the aim of the present research is generally to evaluate the use of the creativity dimensions and components in iran national library website from its users’ point of view. method: we used survey method. research population was composed of 19665 users and 173 librarians of the national library & archives of iran (nlai). the data collecting tool was a questionnaire which was designed by...

Background and objectives: Juniperus excelsa is a flowering plant that has been applied as traditional medicine for treatment of various disorders such as dysmenorrhea, bronchitis and colds, jaundice and tuberculosis. The aims of the present study were analyzing J. excelsa essential oil and investigation of its cytotoxic activity on three breast cancer cell li...

Tecs is a test case development methodology for the functional validation of large electronic systems, typically consisting of several custom hardware and software components. The methodology determines a hierarchical top-down test case development process including test case specification, validation, partitioning and implementation. The test case development process addresses the functional v...

Complex products and large engineering systems require massive efforts to integrate designs at various levels: product and production plans into components, components into sub-systems, sub-systems into systems, and systems into a quality product. We define the product development integration problem as the challenge to coordinate the engineering activities at each level in order to achieve an ...