In this article we construct and discuss several aspects of the two-component spinorial formalism for six-dimensional spacetimes, in which chiral spinors are represented by objects with two quaternionic components spin group is identified $SL(2;\mathbb{H})$, a double covering Lorentz six dimensions. We present fundamental representations show how vectors, bivectors, 3-vectors such formalism. al...

We present a novel technique for localizing a polyhedral object in a robot hand by integrating visual and tactile data. Localization is performed by matching a hybrid set of visual and tactile features with corresponding model features. The matching process "rst determines a subset of the object's six degrees of freedom (DOFs) using the tactile feature. The remaining DOFs, which cannot be deter...

Numerous fields of application effort the detection of pose changes for 3 dimensional objects in six degrees of freedom (6 DoF). Automatic procedures that exploit 2D images for the detection of pose changes can be used for example for tracking object movements, for quality control or for the verification of the alignment of patients in radiation treatment devices. In this contribution we presen...

One of the most crucial aspects of the design of sensor networks is provisioning of efficient query resolution and resource discovery. In many cases sensor networks are expected to be large-scale (i.e., consist of potentially thousands of nodes), and in some cases these sensors maybe installed on moving objects, rendering the query resolution problem even more challenging. Flooding techniques, ...

This paper is devoted to the problem of controlling a robot manipulator for a class of constrained motions. The task under consideration is to control the manipulator, such that the end-effector follows a path on an unknown surface, with the aid of a single camera assumed to be uncalibrated with respect to the robot coordinates. To accomplish a task of this kind, we propose a new control strate...

This paper presents a method for the autonomous calibration of six degrees-of-freedom parallel robots. The calibration makes use of the motorized prismatic joint positions corresponding to some sets of configurations where in each set either a passive Universal joint or a passive Spherical joint is fixed using a lock mechanism. Simulations give us an idea about the number of sets that must be u...

using a wide range of techniques, including differential scanning calorimetry, x-ray diffraction, rapid visco analyser and fourier transform infera red spectroscopy, some physicochemical properties of the starch fraction of six iranian rice cultivars (tarom, tarome hashemi, neda, ramezani, fajr and kamfirouzi) [1]were studied and compared. dsc data showed that starch granules of different rice ...

During design spiral of a merchant ship or a naval vessel, it is important to perform towing tank tests in order to measure its performance either in calm water maneuvers or in waves for seakeeping performance. Also, to optimize a hydrodynamic design, towing tank tests are advantageous.This article presents the results of an applied research project. The objective of this project is to design a...

5 [1] Using the Moderate Resolution Imaging Spectroradiometer (MODIS), Spinning 6 Enhanced Visible and Infrared Imager (SEVIRI), Clouds and the Earth’s Radiant Energy 7 System (CERES) instrument, and BaE146 aircraft data sets, we provide an overview of 8 volcanic ash spatial distribution for six days (4–18 May 2010) and assess their properties 9 and radiative impacts for 17 May primarily over t...

We used the Aladin Virtual Obsrvatory tool and High Resolution Imager ROSAT archival data to search for X-ray variability in scale of days in 23 young stars in the σ Orionis cluster and a background galaxy. Five stars displayed unambiguous flares and had probabilities pvar ≫ 99% of being actual variables. Two of the detected flares were violent and long-lasting, with maximum duration of six day...