Spacecraft equipped with gecko-inspired dry adhesive grippers can dynamically grasp objects having a wide variety of featureless surfaces. In this paper we propose an optimization-based control strategy to exploit the dynamic robustness of such grippers for the task of grasping a free-floating, spinning object. First, we extend previous work characterizing the dynamic grasping capabilities of t...

In this paper we present an algorithm for automatically building models of articulated objects from range data. These models not only describe the surface shape of the object but also describe the kinematics that constrain the movement of one object component in relation to another. This is more diicult than building models of rigid objects because the association of surface measurements to obj...

This paper describes the multiple object tracking component of an automated CCTV surveillance system. The system tracks objects, and alerts the operator if unusual trajectories are discovered. Objects are detected by background differencing. Low contrast levels can present problems, leading to poor object segmentation and fragmentation, particularly on older analogue surveillance networks. The ...

Current graphical object-oriented design notations are syntax-bound and semantic-free since they tend to focus on design representation rather than on the meaning of the design. This paper proposes a meaning for object-oriented designs in terms of object behaviours represented as constructions in category theory. A new design language is proposed, based on-notation, whose semantics is given by ...

Recent research of the author has studied edge-labelled directed trees under a natural multiplication operation. The class of all such trees (with a fixed labelling alphabet) has an algebraic interpretation, as a free object in the class of adequate semigroups. We consider here a natural subclass of these trees, defined by placing a restriction on edge orientations, and show that the resulting ...

This paper addresses the problem of transporting objects by multiple mobile robots using the concept of object closure. In contrast to other manipulation techniques that are typically derived from form or force closure constraints, object closure requires the less stringent condition that the object be trapped or caged by the robots. We present experimental results that show car-like robots con...

In the asynchronous PRAM model processes communicate by atomically read ing and writing shared memory locations This paper investigates the extent to which asynchronous PRAM permits long lived highly concurrent data struc tures An implementation of a concurrent object is non blocking if some op eration will always complete in a nite number of steps it is wait free if every operation will comple...

in this article we introduce the notion of textit{fractal $omega$-operad} emerging from  a natural $omega$-operad associated to any coglobular object in the category of higher operads in batanin's sense, which in fact is a coendomorphism $omega$-operads. we have in mind coglobular object of higher operads which algebras are kind of higher transformations. it follows that this natural $omega$-op...

Objective(s) Cannabinoids have been implicated in memory deficit. We examined the effect of AM281, cannabinoid antagonist/inverse agonist in prevention of scopolamine-induced cognitive deficit. Materials and Methods  Object recognition task was used to evaluate memory in mice. Exploration time in the first and the second trial was recorded. The differences in exploration between a previously...

Thermal motion of charge carriers in a conducting object causes magnetic field noise that may interfere with sensitive measurements near the object. In this paper, we describe method to compute spectral properties thermal from arbitrarily shaped thin objects. The is based on modeling divergence-free currents surface using stream function and calculating magnetically independent noise-current mo...