Research publications: Recent submissions
Now showing items 8581-8600 of 9764
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Magnetar twists: Fermi/Gamma-Ray Burst Monitor detection of SGR J1550-5418
(2010)SGR J1550-5418 (previously known as AXP 1E 1547.0-5408 or PSR J1550-5418) went into three active bursting episodes in 2008 October and in 2009 January and March, emitting hundreds of typical soft gamma repeater bursts in ... -
User involvement in the development of a health promotion technology for older people: findings from the SWISH project
(2010)Successive English government policies about older people's health and well-being aim to improve health and quality of life by promoting independence. Improving access to information and services that can improve health ... -
Holonomy Embedding for Arbitrary Stable Semigroups
(2002)We show how the Rhodes expansion Ŝ of any stable semigroup S embeds into the cascade integral (a natural generalization of the wreath product) of permutation-reset transformation semigroups with zero adjoined. The permutation ... -
The Robot in the Swarm : An Investigation into Agent Embodiment within Virtual Robotic Swarms
(2003)This paper explores the notion of degree of embodiment within the context of autonomous agent research, specifically within swarms of virtual robotic agents. Swarms of virtual robots with systematically varied degrees of ... -
Evolving Embodied Genetic Regulatory Network-driven Control Systems
(2003)We demonstrate the evolution of simple embodied Genetic Regulatory Networks (GRNs) as real-time control systems for robotic and software-based embodied Artificial Organisms, and present results from two experimental ... -
An Experimental Analysis of Local Minima to Improve Neighbourhood Search
(2003)The paper reports the results from a number of experiments on local search algorithms applied to job shop scheduling problems. The main aim was to get insights into the structure of the underlying configuration space. We ... -
Approximation of Boolean Functions by Local Search
(2004)Usually, local search methods are considered to be slow. In our paper, we present a simulated annealing-based local search algorithm for the approximation of Boolean functions with a proven time complexity that behaves ... -
Requirements Problems in Twelve Software Companies: An Empirical Analysis
(2002)A study of the problems experienced by twelve software companies in their requirements process is discussed. The aim of the work is to develop a more holistic understanding of the requirements process, so that companies ... -
Software Process Improvement Motivators : An Analysis using Multidimensional Scaling
(2002)In this paper we present an analysis of software practitioners' motivations for software process improvement (SPI). Our findings are based on an empirical study of SPI in 13 software companies where we conducted focus ... -
Motivators of Software Process Improvement : An Analysis of Practitioners' Views
(2002-05-15)We present empirical findings from our study of Software Process Improvement (SPI) motivators in 13 UK software companies. Our analysis aims to provide SPI managers with some insight into designing appropriate SPI ... -
The development and evaluation of a software prototype for computer adaptive testing
(2004)This paper presents ongoing research at the University of Hertfordshire on the use of computer-adaptive tests (CATs) in Higher Education. A software prototype based on Item Response Theory has been developed and is described ... -
A Computational Study on Circuit Size vs. Circuit Depth
(2006)We investigate the circuit complexity of classification problems in a machine learning setting, i.e. we attempt to find some rule that allows us to calculate a priori the number of threshold gates that is sufficient to ... -
Computer-assisted diagnosis of focal liver lesions on CT images
(2005)Rationale and Objective. The purpose of the study was to investigate a modified version of a so-called Perceptron algorithm in detecting focal liver lesions on CT scans. Materials and Methods. The modified Perceptron ... -
Spectropolarimetry of the 3-μm water-ice feature towards young stellar objects
(2002)We present spectropolarimetry of the 3-μm water-ice feature towards five young stellar objects embedded in molecular clouds, including the Becklin–Neugebauer object, with wavelength range and spectral resolution much ... -
A multi-epoch near-infrared study of the HH 7-11 protostellar outflow
(2003)We present near-infrared observations of the protostellar outflow HH 7–11 in the molecular hydrogen 1–0 S(1) and [Fe ii] 1.644-μm emission lines. Images at four epochs spread over 11 yr constrain the proper motions of the ... -
Infrared polarimetry of the southern massive star-forming region G333.6-0.2
(2001)We present 8-13μm spectropolarimetry, and 12- and 2-μm imaging polarimetry of the southern massive star-forming region G333.6−0.2. Spectro-polarimetry measurements show that the polarization observed towards the nebula ... -
Near-infrared imaging observations of the southern massive star-forming region G333.6-0.2
(2005)We present near-infrared broad-band JHK' images of the southern massive star-forming region G333.6−0.2. The slope of the K-luminosity function towards the region (0.24 ± 0.01) is considered to be equivalent to that expected ... -
Near-infrared high imaging polarimetry of the Red Rectangle
(2003)We have carried out KHL band high resolution imaging and H band imaging-polarimetry of the Red Rectangle nebula using CIAO and 36 element AO mounted on the 8.2m Subaru telescope. HK band images show a X-shape structure ... -
Magnetic fields in discs : what can be learned from infrared and mm polarimetry ?
(2002)Polarimetric imaging in the infrared and submm offers the possibility of identifying magnetic field configurations in astronomical objects. To test this conjecture a set of field geometries within internally heated discs ...