This paper introduces a model to represent the evolution of VR objects over time. Based on this model a new classification of virtual reality objects is proposed and the semantics associated with each class of object are described. This paper also presents a rationale for modifying object semantics under manipulations by an observer of the object behavior. The manipulation of the spatio-tempora...

Sex differences in immatures predict behavioural differences in adulthood in many mammal species. Because most studies have focused on sex differences in social interactions, little is known about possible sex differences in 'preparation' for adult life with regards to tool use skills. We investigated sex and age differences in object manipulation in immature apes. Chimpanzees use a variety of ...

We address the problem of observing a moving agent. In particular, we propose a system for observing a manipulation process, where a robot hand manipulates an object. A discrete event dynamic systems (DEDS) frame work is developed for the hand/object interaction over time and a stabilizing observer is constructed. Low-level modules are developed for recognizing the "events" that causes state tr...

Distributedmanipulation systems inducemotions on objects through the application of many external forces. An actuator array performs distributedmanipulation using a planar array of many small stationary elements (which are called cells) that cooperate to manipulate larger objects. Typically, highly dense actuator arrays are modeled as spatially continuous, programmable force fields, although in...

On-chip manipulation of micro-objects has long been sought to facilitate fundamental biological studies and point-of-care diagnostic systems. In recent years, research on surface acoustic wave (SAW) based micro-object manipulation (i.e., SAW acoustophoresis) has gained significant momentum due to its many advantages, such as non-invasiveness, versatility, simple fabrication, easy operation, and...

We give a notation and a logical calculus for the description and deductive manipulation of dynamic networks of communicating components. We represent such nets by hierarchical systems of recursive equations for streams. We give logical rules that describe the communication within a net and the dynamic creation of components, channels and rearrangement of the net structure. Such net transformat...

On our Trisk robotic manipulation platform, we have implemented a conceptual representation based around object schemas, which organize all perceptions, motor actions, planning structures, and natural language use according to the objects that they are “about.” This representation provides a clear point of interaction between the discrete domains of task-level planning and language use, and the...

We give a notation and a logical calculus for the description and deductive manipulation of dynamic networks of communicating components. We represent such nets by hierarchical systems of recursive equations for streams. We give logical rules that describe the communication within a net and the dynamic creation of components, channels and rearrangement of the net structure. Such net transformat...

Cooperative object manipulation control of rigid-flexible multi-body systems in space is studied in this paper. During such tasks, flexible members like solar panels may get vibrated that in turn may lead to some oscillatory disturbing forces on other subsystems, and consequently produces error in the motion of the end-effectors of the cooperative manipulating arms. Therefore, to design and dev...