Browsing University of Hertfordshire by Title
Now showing items 23334-23353 of 24153
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Visualising the past – an evaluation of processes and sequences for fingermark recovery from old documents
(2018-10-16)This study aimed to collect data on the effectiveness of most of the fingermark visualisation reagents currently used on porous surfaces on fingermarks aged for up to 90 years, significantly extending the timescales for ... -
Visualization of incomplete data using class information constraints
(Springer Nature, 2002)We analyse how the training algorithm for the Generative Topographic Mapping (GTM) can be modifed to use class information to improve results on incomplete data. The approach is based on an Expectation-Maximisation (EM) ... -
Visualization study on operating performance of a dual compensation chamber loop heat pipe under acceleration condition
(2022-11-25)In this article, a novel visual dual compensation chamber loop heat pipe (DCCLHP) under acceleration conditions was experimentally investigated. The working fluid was deionized water and the wick material was sintered ... -
Visualized experimental study on steady-state performance of a loop heat pipe under elevated acceleration fields
(2023-11-10)In this article, an experimental investigation was carried out to explore the steady-state operational behavior of a newly designed nickel-water dual compensation chamber loop heat pipe (DCCLHP) under elevated acceleration ... -
Visualized-experimental investigation on the melting performance of PCM in 3D printed metal foam
(2022-06-01)In this article, a new composite phase change material (PCM) with metal foam based on three-dimensional (3D) printed technology has been proposed to reduce the structural parameter uncertainties of metal foam. The composite ... -
Visualizing the invisible: class excursions to ignite children’s enthusiasm for microbes
(2020-05-14)We have recently argued that, because microbeshave pervasive – often vital – influences on ourlives, and that therefore their roles must be takeninto account in many of the decisions we face, soci-ety must become ... -
Visuospatial and verbal working memory in the five disc Tower of London task: an individual-differences approach
(2002)This paper reports a study of the roles of visuo-spatial and verbal working memory capacities in solving a planning task - the five-disc Tower of London (TOL) task. An individual differences approach was taken. Sixty adult ... -
A Vital Little BLAST : The War Number as a Key to Wyndham Lewis’s Thought
(2015-05)A hundred years after its publication, the second and final edition of BLAST continues to be viewed as the poor relation, or at least the quiet relation, to its brashly confident predecessor. The editor himself no doubt ... -
Vitamin D binding protein in endometriosis
(2005-05)Two-dimensional gel electrophoresis is a powerful method for identifying post-translationally modified molecules in biological fluids. We examined the presence and expression of vitamin D binding protein (DBP) in the ... -
VLA and ALMA IMAGING of INTENSE GALAXY-WIDE STAR FORMATION in z ∼ 2 GALAXIES
(2016-12-01)We present ≃0.″4 resolution extinction-independent distributions of star formation and dust in 11 star-forming galaxies (SFGs) at z = 1.3-3.0. These galaxies are selected from sensitive blank-field surveys of the 2′ ×2′ ... -
VLA cm-wave survey of young stellar objects in the Oph A cluster : constraining extreme UV- and X-ray-driven disk photo-evaporation -- A pathfinder for Square Kilometre Array studies
(2019-10-21)Observations of young stellar objects (YSOs) in centimeter bands can probe the continuum emission from growing dust grains, ionized winds, and magnetospheric activity, which are intimately connected to the evolution of ... -
VLA HI imaging of the Low Surface Brightness dwarf galaxy DDO47
(Astronomical Society of the Pacific, 1999)We present high resolution VLA-observations of the nearby Low Surface Brightness Galaxy DDO 47. This object shows many hole-like structures in its neutral interstellar medium. The majority of the detected H I-shells are ... -
A VLBA Survey of radio stars in the Orion Nebula Cluster: I. The nonthermal radio population
(2021-01-04)We present first results of a four-epoch VLBA survey for nonthermal emission toward all 556 compact radio sources previously identified in a deep VLA survey of the Orion Nebula Cluster (ONC). We identify VLBA counterparts ... -
A VLBA Survey of radio stars in the Orion Nebula Cluster: II. Astrometry
(2021-01-04)From Very Long Baseline Array (VLBA) observations we previously identified a population of 123 young stellar systems with nonthermal radio emission toward the core of the Orion Nebula Cluster (ONC). We find optical sources ... -
VLBI observations of TTauri South
(2003-06)We report observations of the T Tauri system at 8.4 GHz with a VLBI array comprising the VLBA, VLA and E elsberg 100 m telescopes. We detected a compact source o set approximately 40 mas from the best infrared position of ... -
VLBI observations of two single dMe stars: spatial resolution and astrometry
(2000)We report on 3.6 cm VLA and VLBA observations of YZ CMi and AD Leo, two nearby dMe stars. We resolve YZ CMi and can fit a circular symmetrical gaussian component of FWHP of 0.98 0.2 mas, corresponding to an extent of the ... -
VLT integral field spectroscopy of embedded protostars : using near-infrared emission lines as tracers of accretion and outflow
(2011-04-01)Aims. We present near-infrared spectroscopy of the forbidden emission line (FEL) and molecular hydrogen emission line (MHEL) regions at the bases of Herbig-Haro (HH) jets from seven embedded protostars: SVS 13 (the HH 7-11 ...