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Several measurement methods have been developed to control glare resulting from indoor lighting design. The Unified Glare Rating (UGR), the Visual Comfort Probability, and the Daylight Glare Index are some of the most well-known methods of measurement. In addition to these new methods, four main factors influence the degree of discomfort glare; the luminance of the glare source, the solid angle of the glare source, the background luminance, and the position of the glare source in the field of view must all be taken into account.

What does UGR stand for?
Answer: Unified Glare Rating
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Southampton's largest retail centre, and 35th largest in the UK, is the WestQuay Shopping Centre, which opened in September 2000 and hosts major high street stores including John Lewis and Marks and Spencer. The centre was Phase Two of the West Quay development of the former Pirelli undersea cables factory; the first phase of this was the West Quay Retail Park, while the third phase (Watermark Westquay) was put on hold due to the recession. Work is has resumed in 2015, with plans for this third stage including shops, housing, an hotel and a public piazza alongside the Town Walls on Western Esplanade. Southampton has also been granted a licence for a large casino. A further part of the redevelopment of the West Quay site resulted in a new store, opened on 12 February 2009, for Swedish home products retailer IKEA. Marlands is a smaller shopping centre, built in the 1990s and located close to the northern side of WestQuay. Southampton currently has two disused shopping centres: the 1970s Eaststreet mall, and the 1980s Bargate centre. Neither of these were ever commercially successful; the former has been earmarked for redevelopment as a Morrison's supermarket, while the future of the latter is uncertain. There is also the East Street area which has been designated for speciality shopping, with the aim of promoting smaller retailers, alongside the chain store Debenhams. In 2007, Southampton was ranked 13th for shopping in the UK.

What's WestQuay's ranking among the largest retail centers in the UK?
Answer: 35th
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King Edward's Chair (or St Edward's Chair), the throne on which English and British sovereigns have been seated at the moment of coronation, is housed within the abbey and has been used at every coronation since 1308. From 1301 to 1996 (except for a short time in 1950 when it was temporarily stolen by Scottish nationalists), the chair also housed the Stone of Scone upon which the kings of Scots are crowned. Although the Stone is now kept in Scotland, in Edinburgh Castle, at future coronations it is intended that the Stone will be returned to St Edward's Chair for use during the coronation ceremony.[citation needed]

Upon what are kings of Scots coronated?
Answer:
the Stone of Scone