Rats gathered pellets from the tops of 15.5-cm-tall poles. In a matrix of poles, bait was located on the tops of poles arranged in either a square (Experiment 1) or linear (Experiment 2) configuration. The specific locations of baited poles varied unpredictably from trial to trial. The data show that the rats' choices were controlled by the spatial configuration of baited locations. This indica...

Obstacle avoidance and robot path planning problems have gained sufficient research attention due to its indispensable application demand in manufacturing vis-à-vis material handling sector, such as picking-andplacing an object, loading / unloading a component to /from a machine or storage bins. Visibility map in the configuration space (c-space) has become reasonably instrumental towards solvi...

This paper analyses how spatial changes have affected the land uses distribution in Quilicura, a peripheral low-income area of Santiago de Chile, which has been growing very rapidly during the last twenty years. In this context, the first part of the paper examines the land use assignation at a global scale, where changes in the accessibility of certain areas have created strategic locations on...

Acknowledgements This research effort benefited from the input of a variety of individuals who made both substantive and technical contributions. George Rengert, a consultant on the project, provided valuable insights regarding initial patterns of triangles and suggestions regarding the analysis plan that produced them. Deborah Weisel's question about the impact of repeat victimization on trian...

We present the first configuration space computation algorithm for pairs of rigid parts that move along fixed spatial axes. The motivation is contact analysis for mechanical design of spatial systems and of planar systems with axis misalignment. The part geometry is specified in a parametric boundary representation using planes, cylinders, and spheres. Our strategy is to exploit the specialized...

In this paper, the authors study the kinematic isotropic configuration of spatial cable-driven parallel robots by means of four different methods, namely, (i) symbolic method, (ii) geometric workspace, (iii) numerical workspace and global tension index (GTI), and (iv) numerical approach. The authors apply the mentioned techniques to two types of spatial cable-driven parallel manipulators to obt...

Structural details are reported for a novel right-handed polynucleotide double helix stabilized by vertical base stacking and hydrogen bonding. The primary difference between this duplex and the familiar Watson-Crick horizontally stabilized polynucleotide complex arises in the glycosyl rotation of the heterocyclic bases with respect to the sugar-phate backbone. In the vertical double helix the ...

recent increased islamic awakening in many muslim societies, have given a momentum to rise of contextual necessity for islamic culture. as religion and way of life, islam framed in city. city morphology according to islamic ideology has brought interest to the discussion among the specialists and professionals involved in muslim world for many decades, particularly in iran. this goal can be ach...

Increasing interest for configuration similarity is currently developing in the context of Digital Libraries, Spatial Databases and Geographical Information Systems. The corresponding queries retrieve all database configurations that match an input description (e.g., "find all configurations where an object x0 is about 5km northeast of another x1, which, in turn, is inside object x2"). This pap...

We provide the most comprehensive study to date on the correlation between network centrality measures and vehicular movement flows, using a model of the UK’s entire road network (2,031,971 nodes) and a very large dataset of vehicular movement counts (20,752 instances, evenly distributed over the UK’s territory). We describe the statistical associations between observed vehicular flows and the ...