introduction: air pollution is one of the problems of the recent century caused by vehicles, industries and other urban activities. the city of yazd faces air pollution due to its high population, vehicular traffic and industrial places around the city. one of the important parameters of air pollution is suspended air particles that have harmful effects on the health of people, plants and objec...

1. introduction the earthquake is a disaster which always threatens our country due to specific geographical conditions. according to official statistics, in the past 25 years, 6% of country’s casualties had been due to the earthquake. on average every ten years an earthquake of magnitude 7 on the richter scale occurs in the country (givechi and coworkers 2013:102). temporary accommodation is a...

Urban economics dictate that cities must grow to maintain their vitality. Small cities increase their population and economic base, thereby expanding their city limits. Large cities manage growth so that expansion is controlled, avoiding real estate and economic depressions. Former Albuquerque Mayor David Rusk argues in Cities Without Suburbs that cities with aggressive growth strategies prospe...

INTRODUCTION A critical building block of a functional successful city is the presence of vibrant streets; streets that encourage walking. The level of pedestrian activity is an indicator of a great street as well as economic viability and is often used in determining rental values for retail premises. Walking creates a healthy population and is reflective of a liveable city. Walking is also cr...

introduction: the profits of executable referral system process are including: decrease the staff and equipment and saving in expenses and tools, appropriate division of sources for the best use of them and prevention of put patients to unreasonable expenses. in this course, the purpose of present study was to determine the effective factors on executable amount of referral system process in pu...

INTRODUCTION At the East part of DRC, anecdotal reports are advancing several causes of unsuccessful campaigns of vaccination by the time going: rumors about use of vaccines for killing purpose, injection of vaccine to decrease the reproductive potential in coming generations, use of vaccines by some rebellions and neighboring countries to kill children indirectly, ineffectiveness of vaccines c...