forest road construction is the most costly operation in forestry. road designing and construction in unsuitable areas may increase construction and maintenance costs and also cause many environmental impacts. therefore, it is required to pay more attention to forest road design. in this research, we tried to introduce an appropriate method for locating forest roads using gis and ahp simultaneo...

refraction and diffraction combination of waves, is very important and applicable problem in coastal engineering (e.g. for designing break - water). however, formulation of this phenomen and numerical solution is very difficult. in this study, a numerical algorithm based on the mild slop sea bed theory is presented to obtain the appropriate governing equations of combined refraction diffraction...

In this note we study several conditions to be imposed on a mirror symmetry candidate to the generic multiquasihomogeneous Calabi-Yau variety defined in the product of the quasihomogeneous projective spaces. We propose several properties for a Calabi-Yau complete intersection variety so that its period integrals can be expressed by means of quasihomogeneous weights of its mirror symmetry candid...

knowledge of airflow resistance is an important consideration in designing an appro-priate ventilation system and for proper fan selection. an airflow resistance device was designed and fabricated to measure the airflow resistance of potatoes. the device the composed of an air compressor, a rotameter, a cylindrical bin to contain the potatoes and an inclined u-tube manometer. airflow resistance...

The subject of the article is formation a technological platform for venture investments in innovations conditions sixth mode; object purpose development to achieve this goal, following tasks are solved: research specifics mode, description construction investments; factors increasing efficiency investment, methods theory organizational structures, historical and logical analysis, synthesis, fo...

due to universal importance of tabriz carpet art and presence of specific indicators and motifs in tabriz carpet art and its potentials, existence of architectural site for representing this art as carpet art museum in tabriz is necessary. the site of this project is located adjacent to tabriz blue mosque near the museum historical site. it is essential to consider the historical elements and c...