Search results for "historical data"
showing 4 items of 4 documents
Technological change and wage premiums amongst high-skilled labour
2019
This study examines the impact of the steam engine, which produced wide and long-lasting economic growth from the 19th century to the early 20th century, on the wages of high-skilled seamen in the Swedish merchant maritime shipping industry. The analysis focuses on the years 1869–1914, which was a transition period during which traditional sailing ships were replaced by steam-powered vessels. The study shows that all high-skilled occupations received wage gains under steam technology. The evidence on wage polarization amongst the high-skill occupations remains subtle, although there is certain evidence that wage premiums vary by occupation. peerReviewed
The occurrence of Graphosoma lineatum (Linnaeus, 1758) (Hemiptera: Heteroptera: Pentatomidae) in Poland
2016
Graphosoma lineatum (Linnaeus, 1758) is a characteristic member of the family Pentatomidae. The species is commonly defined as a rare southern element which has colonized the Polish territory in recent years. The data presented in this study clearly indicates that the species is a regular member of Polish fauna, recorded throughout the country since the beginning of the nineteenth century, including stations located in the northern part of the country.
Sharing spatial data with a 3D component as a collaborative and dissemination tool for archaeology: conceptual challenges and technical issues
2018
International audience; Due to INSPIRE directive, various spatial data infrastructure (SDI) were developed to support research activities. In practice, these toolsremain underexploited by researcher for many reasons. First, their use is time-consuming and researchers usually consider that they provide noimmediate benefits. Second, their use is often complex and needs a substantial investment for researchers who have a limited expertise in spatial data. Finally, often based on 2D GIS environment, they do not provide an adequate tool for collaborative research in archaeology. From this experience, an interdisciplinary team designed and developed an SDI based on GeOrchestra, synchronized with …
Measuring the network effect: from the graph theory to diversifiable geohistorical data
2016
International audience