abstract: country’s fiber optic network, as one of the most important communication infrastructures, is of high importance; therefore, ensuring security of the network and its data is essential. no remarkable research has been done on assessing security of the country’s fiber optic network. besides, according to an official statistics released by ertebatat zirsakht company, unwanted disconnec...

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

it is definitely necessary to understand the concept and behavior of causation of life insurance policies and its determinants for insurance managers, regulators, and customers. for insurance managers, the profitability and liquidity of insurers can be increasingly influenced by the number of causation through costs, adverse selection, and cash surrender values. therefore, causation is a materi...

Introduction: Little is known about the causes and contributing factors of fire accidents in medical centers, like the fire accident in Sina Mehr medical clinic in Tehran on June 30, 2020 (19 killed and 14 injured). This study aims to analyze the causes and contributing factors of fire accidents in medical centers to prevent similar accidents. Methods: We used literature review, official repor...

  Background and aims   Occupational accidents and diseases cost 1.25 thousands billion $ to economic of world & links 2 million annually. Rate of death due to occupational accidents in developing countries in some cases is 4 times to developed industrial countries. To control accidents & resultant damages, identification of potential agents causing accidents in  necessary. One of the modern me...

abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...

Introduction: Safety at workplaces is an important issue, and lack of effective and efficient safety management methods based on scientific studies could cost the construction industry. An effective accident investigation and root causes analysis could prevent the occurrence of incidents at minimum cost and time. Material and Method: First, major accidents in road construction projects were id...