background: there can be little doubt that the construction is the most hazardous industry in the worldwide. this study was designed to modeling the factors affecting unsafe behavior from the perspective of safety supervisors. methods: the qualitative research was conducted to extract a conceptual model. a structural model was then developed based on a questionnaire survey (n=266) by two stage ...

This paper presents a flexible method for designing bandpass filter (BPF) using pixel structure and genetic algorithm (GA) optimization. The is made up of grid metallic microstrip stubs, the GA utilized to determine connections between these stubs. enables construction step impedance shunt branches, which are used design traditional BPF. To enhance freedom, one side discrete grids connected gro...

needle insertion is a minimally invasive technique in diagnosing and treating tumors. however, to perform a surgery accurately, the tissue should have minimum amount of displacement during needle insertion so that it reaches the target tissue. therefore, the tissue membrane has to move less to decrease rupturing under the membrane. in this study, the effect of different design parameters on dis...

in the present research, implementations of different computational geometry technologies in isogeometric analysis framework for computational fracture mechanics are investigated. nurbs and t-splines are two different computational geometry technologies which are studied in this work. among features of b-spline basis functions the possibility of enhancing a b-spline basis with discontinuities b...

the activity of angiotension converting enzyme (ace; omim: 106180) in different brain regions of patients with schizophrenia changed, suggesting a possible involvement of ace in psychiatric disorders. genetic polymorphism of insertion/deletion (i/d; dbsnp rs4646994) in the gene encoding ace has been well defined.the present case-control study was performed on 363 (268 males, 95 females) in-pati...