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30 years of multi-wavelength observations of 3C 273
(1999)
We present a wide multi-wavelength database of most observations of the quasar 3C273 obtained during the last 30 years. This database is the most complete set of observations available for an active galactic nucleus (AGN). ...
Investigation into the effect of language on performance in a multimedia food studies application
(University of Hertfordshire, 1999)
An investigation into how performance in a multimedia learning application was related to the level of language support available is reported. Teachers from a College of Further Education, National Vocation Qualification ...
Interaction Between NGC 5394 and NGC 5395
(Astronomical Society of the Pacific, 1999)
The spiral galaxies NGC 5394/95 (at a distance of 47 Mpc) are involved in a recent, close, nonmerging encounter. The smaller galaxy, NGC 5394, has two long, fairly symmetric, open tidal arms (see Figure 1); in numerical ...
High-resolution UKIRT observations of circumnuclear star formation in M100
(1999-01)
We present high-resolution, near-infrared imaging of the circumnuclear region of the barred spiral galaxy M100 (=NGC 4321), accompanied by near-infrared spec- troscopy.We identify a total of 43 distinct regions in the ...
Trust requirements in E-Business : a conceptual framework
(University of Hertfordshire, 1999)
Trust in information services and technologies is an increasingly important issue. The development of trust between businesses, consumers and other stakeholders is seen as crucial to the expansion of e-business markets, ...
A Seyfert Nucleus in BL Lacertae
(Astronomical Society of the Pacific, 1999)
We have obtained spectroscopic observations of the broad Ha line in BL Lacertae over a period of 30 months. These data show that the line equivalent width is anti-correlated with the continuum flux implying that the broad ...
How accurately do we know the parameters of hot DA white dwarfs
(Astronomical Society of the Pacific, 1999)
We present new determinations of effective temperature, surface gravity, and masses for a sample of hot DA white dwarfs selected from the EUVE and ROSAT Wide Field Camera bright source lists in the course of a near-IR ...