We discuss the problem of adding features to a free form surface by applying one or several user deened surface curves. The curves are seen as editable parameters, while the surface is to be changed automatically, keeping a prede-ned set of constraints satissed, speciically the curve{surface incidence and derivatives. We review and update our approach presented earlier 18] and show, how the cur...

Abstract The ship hull form is directly related to each design phase of a ship. This thus frequently designed based on variation well-made parent avoid new risks. However, in variation, satisfactory geometric preservation and good performance continuity the are considered competing requirements. To effectively facilitate an appropriate compromise between these requirements should be achieved. I...

  Application of gepraphic information system and image processing in evaluation of surface runoff of a watershed in recent years has increased greatly. In the study , the runoff curve number map was prepared using geographic information system (GIS)and Landsat Sattelite Images (ETM+)for two watersheds of Mansourabad in southern Khorasan province and Navroud in Gilan province based on the facto...