This paper provides a time-series analysis of recent annual estimates of real GDP and industrial output covering 1270 to 1913. We show that growth can be regarded as a segmented trend stationary process. On this basis, we find that trend growth of real GDP per person was zero prior to the 1660s but then experienced two significant accelerations, preand post-industrial revolution. We also find t...

objective mental retardation (mr) or intellectual disability is one of three chronic and disabling neurological disorders of children and adolescents. its prevalence is estimated 1-3% of the population. mr is defined as significant sub-average intellectual functioning and adaptive behavior that become detectable before the age of 18. mr may come into view before 5 years as delay in at least two...

introduction low birth weight (lbw) is the most common cause of neonatal death in developing countries. the objective of our study was to determine the prevalence and risk factors associated with low birth weight in ardabil, iranfrom 2010 to 2011.methods in a case–control study all live newborns were weighted without clothing using a standard calibrated scale. gestational age was calculated usi...

introduction: mental retardation, is one of the most common causes for referral to genetic counseling centers, and is one of the greatest challenges in health care services in the world. down syndrome is the most common chromosomal abnormalities in humans. methods: this study performed in medical genetic counseling center of welfare organization in south of iran with high consanguineous marriag...

An analytical model is developed to study the viscoelastic micropolar fluid convection from an inclined plate as a simulation of electro-conductive polymer materials processing with nonlinear temperature. Jeffery’s viscoelastic model is deployed to describe the non-Newtonian characteristics of the fluid and provides a good approximation for polymers. Micro-structural is one of the characteristi...

We present a GPU accelerated multi-functional spectral domain optical coherence tomography system at 1300 nm. The system is capable of real-time processing and display of every intensity image, comprised of 512 pixels by 2048 A-lines acquired at 20 frames per second. The update rate for all four images with size of 512 pixels by 2048 A-lines simultaneously (intensity, phase retardation, flow an...

A person with moderate mental retardation would, in a western country, be "diagnosed" early on in life. Consequently, such a child is likely to be sent for special education. Given the high level of job requirements, such a person is unlikely to be employed in the open market later in life. Mental retardation is one of the most frequent disabilities in most studies, mental retardation is found ...

This small book is the first of a series of occasional papers which are to be published under the auspices of the Institute for Research into Mental Retardation, and its author is the chairman of the Institute's Research Committee. In the preface, it is said to be aimed at an intelligent lay audience and it is suggested that 'it will be read with interest and profit by workers in the field of m...

The subject of relativistic length contraction and time dilation appears very early in textbooks as well various forms papers dedicated to teaching relativity. In his paper, O. D. Jefimenko considers “questionable” the experimental confirmations these phenomena offers an alternative explanation based on electromagnetic retardation. following short note, we will deconstruct Jefimenko’s proofs, s...

mental retardation (mr) is one of the most frequently found major genetic disorders around the world, affecting 1-3% of the people in the general population. the recent advancement in molecular biology and cytogenetic study has made possible the identification of new genes for a variety of genetic disorders including autosomal recessive mr. recessive genetic disorders are common in pakistan due...