In an effort to support the development of context-aware applications that use archived sensor data, we introduce the concept of the Context Cube based on techniques of data warehousing and data mining. Our implementation of the Context Cube provides a system that supports a multi-dimensional model of context data and with tools for accessing, interpreting and aggregating that data by using con...

The programming language Haskell plays a unique, privileged role in Information-Flow Control (IFC) research: it is able to enforce information security via libraries. Many state-of-the-art libraries (e.g., LIO,HLIO, andMAC) allow computations to manipulate data with different security labels by introducing the notion of labeled values, which protect values with explicit labels by means of an ab...

The control of a dual-arm robotic system in a manipulation task involving a exible load is considered in this paper. The task consists of following an environment surface without loss of contact. In contrast to other schemes for control of environment interaction, the method used here is purely kinematic, taking advantage of load exibility for keeping contact with the surface. A kinematic descr...

Future large space structures (LSS) will be constructed on orbit by assembling large subassemblies using teams of robots. Here, the challenging task of the control and planning of the cooperative manipulation of large flexible structural modules by such teams is addressed. The robots are mounted on the compliant LSS while moving a module to its pre-assembly position. The objective is to positio...

The manipulation of droplets is used in a wide range of applications, from lab-on-a-chip devices to bioinspired functional surfaces. Although a variety of droplet manipulation techniques have been proposed, active, fast and reversible manipulation of pure discrete droplets remains elusive due to the technical limitations of previous techniques. Here, we describe a novel technique that enables a...

− In this paper, a flexible microassembly system based on hybrid manipulation schemes is proposed and applied to the assembly of a photonic component. In order to achieve both high precision and dexterity in microassembly, we propose a hybrid microassembly system with sensory feedbacks of vision and force. This system consists of the distributed 6-DOF micromanipulation units, the stereo microsc...

Dynamic and heterogeneous nature of ubiquitous computing environments introduces additional requirements to support synchronous collaboration. Such requirements include support of various interaction types, flexible data couplings, and transparent context adaptation. To meet those requirements, in this paper, we propose the manipulation based application model. In comparison to the presentation...

Orbital angular momentum of light has attracted great attention in recent years. Optical ferris wheel, composed the superposition different orbital-angular-momentum modes, further broadens application orbital many fields. Here, we experimentally demonstrate a simple way to produce optical wheel with controllable modes using mask spiral arrays. We show that can be rotated by adjusting arrays, an...

In this paper, we present a low-cost vision based system for handling of hazardous waste in an unstructured environment. The prototype system described shows the feasibility of sorting and removal of randomly mixed and oriented flexible objects from a bin using inexpensive and widely available hardware. Our experiments show that the utilization of even the simplest constructs is sufficient for ...