In this paper, a novel planning method is proposed to solve initial velocities of the free sliding object for given initial and final configurations. Finding the desired initial velocities for free sliding objects is a key step for implementing impulse manipulation and multi-agent dynamic cooperative manipulation. The motion of free sliding objects on a plane is governed by friction forces and ...

3D transformation widgets allow constrained manipulations of 3D objects and are commonly used in many 3D applications for fine-grained manipulations. Since traditional transformation widgets have been mainly designed for mouse-based systems, they are not user friendly for multitouch screens. There is little research on how to use the extra input bandwidth of multitouch screens to ease constrain...

Recent developments have made two-party secure function evaluation (2P-SFE) vastly more efficient. However, due to extensive use of cryptographic operations, these protocols remain too slow for practical use by most applications. The introduction of Intel’s Software Guard Extensions (SGX), which provide an environment for the isolated execution of code and handling of data, offers an opportunit...

Most applications that access large data objects do so through file systems, but file systems provide an incomplete solution, as they maintain insufficient metadata and do not provide general purpose query engine. Storing large objects in a database addresses these problems, but, for applications that need to update object data, databases are inefficient as they do not provide direct access to ...

Interactively creating and editing 3D content requires the manipulation of many degrees of freedom (DoF). For instance, docking a virtual object involves 6 DoF (position and orientation). Multi-touch surfaces are good candidates as input devices for those interactions: they provide a direct manipulation where each finger contact on the table controls 2 DoF. This leads to a theoretical upper bou...

In the network-based DNC systems and especially heterogeneous DNC systems, data get more distributed due to the ability to store not only in the DNC Server, but also in the CNC controller or CNC Terminal. This presents a challenge to the DNC software in the implementation of its basic functions. The agent-based DNC software with assistants (ADNC) is suggested to solve the above problem. Its tas...

OBJECTIVES The contribution of integrons and efflux pumps to multidrug resistance in Stenotrophomonas maltophilia was evaluated. MATERIALS AND METHODS Ninety-three S. maltophilia clinical isolates were studied. PCR and direct sequencing were used to detect the presence of integrons. Real-time PCR was performed to assess and quantify the expression of the Sme efflux pumps of S. maltophilia. ...

Cartoon animation techniques have previously been used to enhance the illusion of direct manipulation in 2D graphical user interfaces. In particular, animation may be used to convey a feeling of substance to the objects being manipulated by the user. This paper presents an expansion of this concept to 3D graphical object manipulation. A standard set of 3D direct manipulation operations have bee...

Animal ecologists have successfully applied agent-based models to many different problems. Often, these focus on issues concerning collective behaviors, environmental interactions, or the evolution of traits. In these cases, patterns of interest can usually be investigated by constructing the appropriate multiagent system, and then varying or evolving model parameters. In recent years, however,...

Studies on natural communication in shape modeling show that both direct manipulation of geometry and the expression of constraints are essential. Current solutions on constraint-based modeling do not support the verbal management of constraints. This paper presents a scheme to recognize and manage geometry-related constraints verbally. The execution and interpretation of constraint management ...