the management of road traffic accident and the care of casualties  has undergone many changes in recent years. to provide an uniform and systematic approach the ems, firefighters, red cross, red crescent and other rescuers must be updated to reduce entrapment times, and mortality rates, over better organisation and a methodical approach. the rescuers should not attempt to administer medical fi...

substantial progress in documenting the role of psychosocial stress in the etiology and development of physical and mental disease has been made in the past 10 years. although the exact mechanisms with which stress impacts health are not fully understood, it is thought that the negative emotional and cognitive effects of stress alter the immune response and increase susceptibility to disease. s...

introduction: knowledge management is one of the most important implements for organization's success in data age and competition situations. nowadays, the notability (importance) of subject is to the extent that some of the organizations measure their available knowledge and reflect these measurements in reports as organization's mental investment and as an index for organization's classificat...

Although food allergy is a major public health problem, currently there is no effective and safe treatment except to avoid the foods .But the need for new options is critical now as the number of children diagnosed with food allergies rises. Avoiding the offending allergen in the diet is the primary treatment of food allergy. Once a food to which the patient is sensitive has been identified, th...

in recent years most of the research done on portfolio management have used different oplimizing models. this research has examined index models in optimizing portfolios and has tried to determine the efficient set. data are collected from companies accepted at the tehran stock exchange (1371-1375).

being observed frequently that projects cannot achieve to their plan duration and their budget. utilizing retrospective method is one of the reasons for this problem. in this research two method, earned duration management and risk management, has been used to remove the gap of the plan and the reality; this enable the project to utilize both high accuracy of the first method and prophecy of th...