Finding a safe, smooth, and efficient path to move an object through obstacles is necessary for object manipulation in robotics and automation. This paper presents an approach to twodimensional as well as threedimensional findpath problems that divides the problem into two steps. First, rough paths are found based only on topological information. This is accomplished by assigning to each obstac...

As mobile robots operate with limited resources which they carry onboard in large obstructed environments, their success is dependent on how efficiently they move while they avoid collision with obstacles and other robots. Moving optimally is the ultimate efficiency a mobile robot can achieve. Therefore, planning optimal motions and devising optimal coordination strategies are two important and...

BACKGROUND The 2011 Japan massive tsunami traumatized many children. The aim of this study was to assess changes in strengths and difficulties experienced in home and school by among surviving children after the 2011 tsunami, in comparison with published normal Japanese data. METHODS In November 2012 (20 months after the disaster) and September 2013 (30 months after the disaster), the Strengt...

housing has been a major challenge for the rising population of countries during last decades and the provision of affordable standard house for low and middle-income households has always been at the forefront of sustainable development strategies and plans, especially in developing countries. besides, the need to high-density housing systems due to rising population has become a central issue...

We were engaged in research in various areas of robotic movement planning. The movement planning problems investigated were static movement problems (where the obstacles do not move), minimum distance path planning, compliant motion control (which involves planning without complete knowledge of the position of the robot) and related frictional movement problems, motion planning with independent...

the statistical population of this study consisted of 944 post-graduate and under graduate students, who were in their last academic year in the campus of agricultural and natural resources the university of tehran. a questionnaire was used to collect the data. the content validity of the questionnaire was established by a panel of experts in the field of agriculture in the university of tehran...

in spite of 60 years of past experience, agricultural extension in iran still faces problems, obstacles and limitations. researchers believe that during these years, the service available to farmers has been neither successful nor satisfactory. with respect to the presently available problems and limitations, a thorough identification and analysis of these issues is necessary as well as inevita...

the aim of this study was to use ahp method to rank the obstacles to improving professional ethics in sport media. in the first step, the existing obstacles were identified by review of literature, searching the authentic websites and finally interview with sport media experts. after this step, the hierarchy tree was portrayed to rank the obstacles and then the analytical hierarchy process (ahp...

background and purpose: physical activity may be classified as intense, moderate, and low. despite their health-related benefits, iranian women have a low rate of physical activity. women face numerous obstacles and challenges for participating in physical activity programs, most notably are household chores and taking caring of children, long distance between home and workplace and the other p...