The Influence of Indoor Climate Control on Risk for Damages in Naturally Ventilated Historic Churches in Cold Climate

This article analyzes the indoor climate that creates risk of damages in naturally ventilated churches in the cold climate of Estonia. Indoor temperature and humidity were measured over a one-year period and the results were analyzed on the basis of damage functions: mold growth, risk of cracking and fracturing of wooden objects, and delamination of the gesso layer of panel paintings.

In unheated churches, one of the most dominant problems was very high relative humidity throughout the year, creating a high risk for mold and algae growth. Churches may need background heating to avoid freezing during a long cold winter that causes low surface temperatures of massive walls during the spring–summer period. It was found that mold risk was significantly lower in heated churches than in unheated or intermittently heated churches. The risk of mold growth was not decreased by the use of intermittent heating.

In heated churches, overheating (room temperature >+10ºC) causes a RH below 50% during cold periods, and the favorable period for irreversible response of panel paintings was significantly longer, so there is a higher risk that the gesso may crack or delaminate. From the point of view of the cracking and fracturing of wood, indoor climate conditions are in the safe range for most of the year.     

Defusing Dualism: Mind,Materiality and Prehistoric Art

The paper presents a sculpture made of a fossilised shell. It was found during an excavation at the site Torpum 9b in Østfold, south‐eastern Norway. The site and thereby the figure are dated to the late Mesolithic period. The sculpture is interpreted as an essence of female attributes, that is the hips and pelvis of a female human with the genitalia marked. This interpretation requires a discussion of the relations between general principles and actual historical situations. The interest in fossils is presumable universal, but the specific culture‐historical interpretation of the sculpture from Østfold must take the local Mesolithic context as its framework. Through an examination of fossils in folklore and prehistory, and a presentation of the particular fossil's geological origin and context, the universal and non‐historical meaning of the sculpture is presented. This perspective is then discussed in the context of the east Norwegian Mesolithic.     

Medieval Britain and Ireland in 1998

Abstract

Historic Building Investigations and selective excavations carried out during recent conservation works have shed new light on St Mary's Guildhall, Boston (Lincolnshire), built by an internationally significant religious fraternity in one of the most important ports of medieval England. Dendrochronological dating of the guildhall indicates a construction date of c 1390. This is significantly earlier than had previously been supposed and suggests a close link between the construction of the guildhall and the grant of a royal licence of incorporation to the guild in 1392. It makes the guildhall one of the earliest securely dated brick buildings in Lincolnshire and is important evidence of investment during a period when Boston was experiencing severe economic decline. Multidisciplinary analysis of the archaeology of the building and some of the guild's surviving documentary records enables a reconstruction of the original form and function of the guildhall and its now-lost material culture. Comparative analysis of Boston with other surviving provincial guildhalls begins to shed light on the emergence of a distinctive type of public architecture in pre-modern England.     

Intervention: Mapping is critical!

This intervention targets the much heralded demise of the map in geography and the recently proposed “rethinking” of maps. It comprises contributions from two political geographers, a military geographer, a political scientist, and two activist cartographers and argues that there is not so much a need to “rethink” maps, but to “re-engage” with the material practices of mapping, and above all to “re-make” maps.     

Knowledge management in regional innovation networks: The case of Lahti,Finland1

This article focuses on knowledge creation and management in regional innovation networks. A knowledge management system for a regional innovation network is designed. Besides explicit and tacit knowledge, self-transcending knowledge is taken into account within the knowledge management system. In addition, considerations of knowledge vision as well as methods from futures studies are incorporated into the system. An innovation network of the Lahti regional innovation system, Finland, is used as a case example in the article. The article highlights the importance of combining loose network development and an explicit, systematic approach to planning and working on knowledge-related matters within regional innovation networks.