Sociocultural Aspects of Technological Change: The Rise of the Swiss Electricity Supply Economy

The impressive growth of the Swiss electricity supply industry in the late nineteenth cestury has usually been explained by Switzerland's abundant waterpower resouces, its well-equipped financial markets, and the mechanical skills of its Swiss workers and engineers. This article does not aim to deny the importance of these factors. Rather it seeks to explain how they developed synergetic effects and how they were knit together. The argument is put forward in three steps: First, I show the importance of the new technology's discursive integration, arguing that the development of specialized electric discourse led to a social shaping of technology that was highly compatible with generalized cultural patterns of late nineteenth-century Swiss society. The expressive dispositions and instituted means of expression that constitiute the elextric discourse were constantly pursuing and achieving effective resonances in other discursive fields. This allowed for a solid integration of the electrotechnical discourse in late nineteenth-century Swiss society. Second, I argue that electrotechnology was modeled in such a way that it became coupled with existing technological (and scientific) practices, such as the national mapping endeavor, the urban gas and water supply, the sewer system, and the telegraphic networks. It is noteworthy that making electrotechnology compatible with other technological practices led not only to similar patterns in the design and management of both the old and the new technologies but also to operated with the existing water supply station. Using the example of the electrification of Zurich, I then, in a third step, combine the two elements - discursive accommodation and practical assimilation - to demonstrate their effects on the selection and construction of technology. The article's somewhat complex argumentative strategy allows for a differentiated interpretation of the phenomenon and shows the importance of taking into consideration the sociocultural dimension of economic growth that had its roots in the diffusion of a new technolog

Vermessene Landschaften: Kulturgeschichte und technische Praxis im 19. und 20. Jahrhundert

ISSN:1661-889

"Wir wissen, dass man 2050 über unsere Prognosen lachen wird"

Euro, Atom, Umwelt – es kriselt allenthalben. Historiker David Gugerli ist überzeugt, dass der Glaube an die Technik abgenommen hat. Gleichzeitig wir lernen, mit den vielen Optionen unserer Zeit umzugehen

Tree growth response along an elevational gradient: climate or genetics?

Environment and genetics combine to influence tree growth and should therefore be jointly considered when evaluating forest responses in a warming climate. Here, we combine dendroclimatology and population genetic approaches with the aim of attributing climatic influences on growth of European larch (Larix decidua) and Norway spruce (Picea abies). Increment cores and genomic DNA samples were collected from populations along a ~900-m elevational transect where the air temperature gradient encompasses a ~4°C temperature difference. We found that low genetic differentiation among populations indicates gene flow is high, suggesting that migration rate is high enough to counteract the selective pressures of local environmental variation. We observed lower growth rates towards higher elevations and a transition from negative to positive correlations with growing season temperature upward along the elevational transect. With increasing elevation there was also a clear increase in the explained variance of growth due to summer temperatures. Comparisons between climate sensitivity patterns observed along this elevational transect with those from Larix and Picea sites distributed across the Alps reveal good agreement, and suggest that tree-ring width (TRW) variations are more climate-driven than genetics-driven at regional and larger scales. We conclude that elevational transects are an extremely valuable platform for understanding climatic-driven changes over time and can be especially powerful when working within an assessed genetic framewor

Sharing als Konzept, Lösung und Problem: Ein Gespräch über Informatik im technikhistorischen Wandel

Zusammenfassung: Als Profession und Wissenschaft war die Informatik im 20. Jahrhundert stets "eingeklemmt" zwischen den Ansprüchen möglicher Nutzer und den Anforderungen, Möglichkeiten und Limitationen, die der Computer vorgab. Die Informatik entwickelte in diesem Spannungsfeld Sharing-Konzepte der unterschiedlichsten Art. Im folgenden Gespräch unterhalten sich zwei Informatiker (Andreas Meier und Carl August Zehnder) und zwei Technikhistoriker (David Gugerli und Daniela Zetti) über eine Entwicklung, die seit mehr als 50 Jahren anhält, die aber nicht in immer mehr Sharing kulminierte, sondern die sich stets durch lebhaften Wandel auszeichnete. Es gibt unterschiedliche Qualitäten von Sharing und es gibt und gab auch dezidierte Anti-Sharing-Entwicklungen

Gene flow between wheat and wild relatives: empirical evidence from Aegilops geniculata, Ae. neglecta and Ae. triuncialis

Gene flow between domesticated species and their wild relatives is receiving growing attention. This study addressed introgression between wheat and natural populations of its wild relatives (Aegilops species). The sampling included 472 individuals, collected from 32 Mediterranean populations of three widespread Aegilops species (Aegilops geniculata, Ae. neglecta and Ae. triuncialis) and compared wheat field borders to areas isolated from agriculture. Individuals were characterized with amplified fragment length polymorphism fingerprinting, analysed through two computational approaches (i.e. Bayesian estimations of admixture and fuzzy clustering), and sequences marking wheat-specific insertions of transposable elements. With this combined approach, we detected substantial gene flow between wheat and Aegilops species. Specifically, Ae. neglecta and Ae. triuncialis showed significantly more admixed individuals close to wheat fields than in locations isolated from agriculture. In contrast, little evidence of gene flow was found in Ae. geniculata. Our results indicated that reproductive barriers have been regularly bypassed during the long history of sympatry between wheat and Aegilops

Reconstructing the basal angiosperm phylogeny: evaluating information content of mitochondrial genes

Three mitochondrial (atp1, matR, nad5), four chloroplast (atpB, matK, rbcL, rpoC2), and one nuclear (18S) genes from 162 seed plants, representing all major lineages of gymnosperms and angiosperms, were analyzed together in a supermatrix or in various partitions using likelihood and parsimony methods. The results show that Amborella + Nymphaeales together constitute the first diverging lineage of angiosperms, and that the topology of Amborella alone being sister to all other angiosperms likely represents a local long branch attraction artifact. The monophyly of magnoliids, as well as sister relationships between Magnoliales and Laurales, and between Canellales and Piperales, are all strongly supported. The sister relationship to eudicots of Ceratophyllum is not strongly supported by this study; instead a placement of the genus with Chloranthaceae receives moderate support in the mitochondrial gene analyses. Relationships among magnoliids, monocots, and eudicots remain unresolved. Direct comparisons of analytic results from several data partitions with or without RNA editing sites show that in multigene analyses, RNA editing has no effect on well supported relationships, but minor effect on weakly supported ones. Finally, comparisons of results from separate analyses of mitochondrial and chloroplast genes demonstrate that mitochondrial genes, with overall slower rates of substitution than chloroplast genes, are informative phylogenetic markers, and are particularly suitable for resolving deep relationships.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/147147/1/tax25065680.pd

The GenTree Platform: growth traits and tree-level environmental data in 12 European forest tree species

Background: Progress in the field of evolutionary forest ecology has been hampered by the huge challenge of phenotyping trees across their ranges in their natural environments, and the limitation in high-resolution environmental information. Findings: The GenTree Platform contains phenotypic and environmental data from 4,959 trees from 12 ecologically and economically important European forest tree species: Abies alba Mill. (silver fir), Betula pendula Roth. (silver birch), Fagus sylvatica L. (European beech), Picea abies (L.) H. Karst (Norway spruce), Pinus cembra L. (Swiss stone pine), Pinus halepensis Mill. (Aleppo pine), Pinus nigra Arnold (European black pine), Pinus pinaster Aiton (maritime pine), Pinus sylvestris L. (Scots pine), Populus nigra L. (European black poplar), Taxus baccata L. (English yew), and Quercus petraea (Matt.) Liebl. (sessile oak). Phenotypic (height, diameter at breast height, crown size, bark thickness, biomass, straightness, forking, branch angle, fructification), regeneration, environmental in situ measurements (soil depth, vegetation cover, competition indices), and environmental modeling data extracted by using bilinear interpolation accounting for surrounding conditions of each tree (precipitation, temperature, insolation, drought indices) were obtained from trees in 194 sites covering the species’ geographic ranges and reflecting local environmental gradients. Conclusion: The GenTree Platform is a new resource for investigating ecological and evolutionary processes in forest trees. The coherent phenotyping and environmental characterization across 12 species in their European ranges allow for a wide range of analyses from forest ecologists, conservationists, and macro-ecologists. Also, the data here presented can be linked to the GenTree Dendroecological collection, the GenTree Leaf Trait collection, and the GenTree Genomic collection presented elsewhere, which together build the largest evolutionary forest ecology data collection available

Between but not within species variation in the distribution of fitness effects

New mutations provide the raw material for evolution and adaptation. The distribution of fitness effects (DFE) describes the spectrum of effects of new mutations that can occur along a genome, and is therefore of vital interest in evolutionary biology. Recent work has uncovered striking similarities in the DFE between closely related species, prompting us to ask whether there is variation in the DFE among populations of the same species, or among species with different degrees of divergence, i.e., whether there is variation in the DFE at different levels of evolution. Using exome capture data from six tree species sampled across Europe we characterised the DFE for multiple species, and for each species, multiple populations, and investigated the factors potentially influencing the DFE, such as demography, population divergence and genetic background. We find statistical support for there being variation in the DFE at the species level, even among relatively closely related species. However, we find very little difference at the population level, suggesting that differences in the DFE are primarily driven by deep features of species biology, and that evolutionarily recent events, such as demographic changes and local adaptation, have little impact

Kernenergienutzung – ein nachhaltiger Irrtum der Geschichte?

The history of atomic energy has been producing major surprises for at least half a century. A wave of atomic enthusiasm which grew to a veritable atomic euphoria was triggered by the famous atoms-for-peace speech by US president Eisenhower in 1953. Despite their inherent technocratic pacifism, Eisenhower's atoms led to critical conflicts within those societies that subscribed to the nuclear development scheme, A critical revision of these conflicts reveals a dramatic falling apart of the historic horizon of expectations and the historic development path, Notwithstanding, both the apologists or nuclear energy use and their antagonists have erred in many ways without truly losing their capacity to act. They misjudged the planning security, the safety of the installations, and the stability or the price relations, on the energy and capital equipment markets, Moreover, both sides erred in their predictions concerning the political conditions and the social consequences of nuclear power plants. This observation is not historically insightful in the sense of learning from one's mistakes. It is insightful rather for the relationship between experience, expectation and decision on the one hand and socio-technical change on the other hand,ISSN:0369-503