In automotive industry fixtures have a direct effect on product manufacturing quality, productivity and cost, as a result fixtures, particularly welding fixture, play a crucial role in the auto industry. The fixture is a special tool for holding a work piece in proper position during manufacturing operation, so in the phase of the fixture design process positioning pins and surfaces are used to...

introduction: infant mortality index is an important health indicator. this index has a direct impact on infant mortality and mortality of children less than five years. the present study aimed to investigate causes of infant deaths during 2010-2011 in bandar abbas hospital of children. methods: in this cross - sectional retrospective study profiles of all dead newborns who aged from 0 to 28 da...

Global Positioning System (GPS) is proven to be an accurate positioning sensor. However, there are several sources of errors such as ionosphere and troposphere effects, satellite time errors, errors of orbit data, receivers errors, and errors resulting from multi-path effect which reduce the accuracy of low-cost GPS receivers. These sources of errors also limit the use of single-frequency GPS r...

Introduction: The accuracy of patient positioning plays an important role for radiotherapy tasks. Short and automated Quality Assurance (QA) programs are becoming one of the challenging tasks in Radiotherapy. The current study, investigates the accuracy of treatment couch positioning with four degrees of freedom (4DoF) using a fast and accurate method based on an image acquired...

introduction: gastroesophageal reflux (ger) is the most common esophageal disorder, which occurs at all ages. ger is defined as the passage of gastric contents into the esophagus. ger disease (gerd), which is a long-term complication, is a common pediatric problem. clinical manifestations of gerd in infants include regurgitation, irritability, choking, gagging, vomiting, poor weight gain, and r...

the birth weight is one of the important factors affecting the perinatal morbidity and mortality. fetal macrosomia is associated with increased risks of cesarean section and trauma. to determine prevalence and outcome of the macrosomic infants, this case-control, prospective study is performed in the two university hospitals in tehran during a 36- month period between 2002 through 2004. 1000 ne...

background accurate diagnosis of tuberculosis in infants is important. there are a few studies around tuberculosis in infancy in the literature. objectives this study defines the clinical and radiological features of tuberculosis in infants less than one year of age. materials and methods the medical records were reviewed for all infants aging 12 months or less with diagnosis of tuberculosis at...

in this paper a practical method for tropospheric effects on gps derived coordinates in absolute mode is presented. gps observations at the permanent gps stations can be used as source of information for the modeling. the developed model is a time-dependent model and as such differs from usual tropospheric models, which are based on atmospheric parameters, i.e. temperature, pressure and humidit...