نتایج جستجو برای: systematic error random error epid
تعداد نتایج: 790237 فیلتر نتایج به سال:
Background: Human error is the cause of many serious accidents in the world. In medical jobs, it causes the patients to get much worse or lost their life. Therefore, current study was conducted to identify and evaluate human error among physicians working at emergency ward using Systematic Human Error and Reduction Prediction Approach (SHERPA) technique in an educational hospital in Semnan, Ira...
Analog beamforming technology is being used to overcome various technical drawbacks of mm-wave wireless communications systems. However, the errors caused by circuit implementations, quantized control, and imperfect isolation between antenna elements result in radiation pattern (RP) distortion performance deterioration. In particular, quantization error mutual coupling cause active reflection c...
Background: Respiratory motion causes thoracic movement and reduces targeting accuracy in radiotherapy. Objective: This study proposes an approach to generate a model to track lung tumor motion by controlling dynamic multi-leaf collimators. Material and Methods: All slices which contained tumor were contoured in the 4D-CT images for...
The present study aims to model systematic risk using financial and accounting variables. Accordingly, the data for 174 companies in Tehran Stock Exchange are extracted for the period of 2006 to 2016. First, the systematic risk index is estimated using the ARFIMA-FIGARCH model. Then, based on the research background, 35 affective financial and accounting variables are simultaneously used with t...
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