Papers by Lise Ræder Knudsen
Triennial meeting (14th), The Hague, 12-16 …, 2005
At the regional conservation centre in Vejle County, Denmark, conservators took the initiative to... more At the regional conservation centre in Vejle County, Denmark, conservators took the initiative to raise money and build a new shared storage facility for 16 museums and archives. The store was built in 2003 using the principles of passive climate control. Deep concrete walls, thick isolation and floors using the ground's natural heat, offered minimal running expenses. A large building erected by industrial building contractors meant very low costs of construction.
VML Verlag Marie Leidorf GmbH, 2013
Let us fix a prime p and a homogeneous system of m linear equations aj,1x1 + • • • + a j,k x k = ... more Let us fix a prime p and a homogeneous system of m linear equations aj,1x1 + • • • + a j,k x k = 0 for j = 1,. .. , m with coefficients aj,i ∈ Fp. Suppose that k ≥ 3m, that aj,1 + • • • + a j,k = 0 for j = 1,. .. , m and that every m × m minor of the m × k matrix (aj,i)j,i is non-singular. Then we prove that for any (large) n, any subset A ⊆ F n p of size |A| > C • Γ n contains a solution (x1,. .. , x k) ∈ A k to the given system of equations such that the vectors x1,. .. , x k ∈ A are all distinct. Here, C and Γ are constants only depending on p, m and k such that Γ < p. The crucial point here is the condition for the vectors x1,. .. , x k in the solution (x1,. .. , x k) ∈ A k to be distinct. If we relax this condition and only demand that x1,. .. , x k are not all equal, then the statement would follow easily from Tao's slice rank polynomial method. However, handling the distinctness condition is much harder, and requires a new approach. While all previous combinatorial applications of the slice rank polynomial method have relied on the slice rank of diagonal tensors, we use a slice rank argument for a non-diagonal tensor in combination with combinatorial and probabilistic arguments.
First Aid for the Excavation of Archaeological Textiles
Macquarie University ResearchOnline.
4th Annual International Conference on Architecture and Civil Engineering (ACE 2016), 2016
Museums keep and protect a part of our material cultural heritage for future generations; however... more Museums keep and protect a part of our material cultural heritage for future generations; however the museums only exhibit a little part of their collections and most of the objects are kept in storage. Unfortunately the climates of many storage rooms are not ideal for keeping the chemical and physical decay of the objects as low as possible. Museum storage buildings should be able to provide a considerable stable indoor environment in terms of temperature and relative humidity. This paper explores how to simulate and build low energy museums storage buildings, and the paper shows that it is possible to make a building of low building expenses, very low running expenses and very high quality. In addition it is described that the energy consumption is only 2% compared to normal HVAC solutions, and the 2% can be delivered by excess wind power from Danish windmills resulting in that the building is close to be CO 2 neutral. The analysis shows very good agreement between simulations and measurements, meaning that the proposed methods can be used for designing museum storage buildings. The analysis also shows, that the weather conditions of previous years, affect the indoor environment of the following years.
Leather Conservation News, 1990
In 1950 a bog body, the Tollund man, was found in Jutland. In the National Museum Laboratory exca... more In 1950 a bog body, the Tollund man, was found in Jutland. In the National Museum Laboratory excavation and examinations were conducted by B. Brorson Christensen and Knud Thorvildsen. The relatively well preserved head was dehydrated in alcohol and toluene and impregnated with paraffin wax, beeswax, carnauba and dammar. Though shrinkage occurred, it was exhibited. The right foot and thumb rested in a water formaldehyde solution until the 1970's when they were impregnated with an unspecified PEG and freeze dried. More scientific investigations were carried out in 1978, which indicate a date of ca. 220 BC. In 1986, an epoxy body was cast from a silicone rubber mold made from a wax body sculpted using excavation photographs. This is now exhibited with the head in place.
In 1969 a female burial from the Early Roman Iron Age with exceptionally well preserved textiles ... more In 1969 a female burial from the Early Roman Iron Age with exceptionally well preserved textiles was excavated in Lønne Hede in Southwest Jutland, Denmark. At the time, the find drew a great deal of attention and since then, the Lønne Hede Maiden and her blue and red dress have been copied and displayed in museums and textbooks as the female costume of the Scandinavian Iron Age. This article shows that the interpretation of both her costume and her hairstyle is debatable. In 1995 further excavations were carried out revealing a cemetery with both cremation graves from the Late Pre-Roman Iron Age and inhumation graves from the Early Iron Age, as well as an older settlement with long houses, a smithy, and votive deposits from the Early Pre-Roman Iron Age. The burials are not rich graves, with the Lønne Hede Maiden with her pieces of silver jewellery as the exception. However, the Lønne Hede site is remarkable due to the well preserved, boldly coloured textiles and the exceptional pres...
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Papers by Lise Ræder Knudsen