The paper describes an application of the A* algorithm for flight path planning for airplanes with defined motion dynamics operating in a continuous three-dimensional space constrained by existing physical obstacles. The presented A* algorithm modification provides significant acceleration (reduction of the state space) of the path planning process. The described algorithm is able to find a pat...

Obesity rates among children and adolescents in developed countries have increased dramatically since the 1970s. During that same period, numerous secular changes have combined to reduce the demand for physical activity in day-to-day life, and many barriers to physical activity are now evident. As a consequence, most children and adolescents do not meet the accepted public health guidelines for...

A large proportion of non-communicable disease can be attributed to modifiable risk factors such as poor nutrition and physical inactivity. We present data on planning and transport practitioners' perceptions and responses to government public health guidance aimed at modifying environmental factors to promote physical activity. This study was informed by questions on the role of evidence-based...

This paper describes a domain description language DDL.1 able to represent physical domains to solve planning and scheduling problems. DDL.1 uses a representation, inspired by classical control theory, based on state-variables to represent the relevant features of a domain. Each state variable is meant to represent a set of plausible temporal evolutions those features may have. DDL.1 allows to ...

Like any living system, urban communities consume material and energy inputs, process them into usable forms, and eliminate the wastes from the process. This can be seen as "metabolism" of industry, commerce, municipal operations and households. Understanding the pattern of these energy and material flows through a community's economy provides a systemic reading of the present situation for goa...

BACKGROUND Nashville, Tennessee, formed Music City Moves (MCM), an interdisciplinary, countywide partnership to implement its vision for the community: a metropolitan region where routine physical activity is a fundamental part of daily life for all residents. INTERVENTION Music City Moves' main focus was the pursuit of changes in community planning policies to help shape Nashville's built en...

introduction wedge modifiers are commonly applied in external beam radiotherapy to change the dose distribution corresponding to the body contour and to obtain a uniform dose distribution within the target volume. since the radiation dose delivered to the target must be within ±5% of the prescribed dose, accurate dose calculation by a treatment planning system (tps) is important. the objective ...

1. introduction urmia is one of the important historical cities of iran which in recent years has been associated with physical-spatial rapid expansion. one of the necessities of spatial planning of urmia is controlling the rapid expansion of the city in marginal areas that are unbalanced fertile land and industrial and mineral soils are under construction and this problem has presented numerou...

We formally pose and explore some novel issues that arise for eye-sensor based motion planning for robots with non-trivial geometry/kinematics. The key issue is that while the sensor senses in physical space, the planning takes place in configuration space, and the two spaces are distinctly different for robots with nontrivial geometry/kinematics. This leads to some very interesting, fundamenta...

The ability to plan their own motions and to reliably execute them is an important precondition for autonomous robots. In this paper, we consider the problem of planning the motion of a mobile manipulation robot in the presence of deformable objects in the environment. Our approach combines probabilistic roadmap planning with a deformation simulation system. Since the physical deformation simul...