Competing Transport Futures: Tensions between Imaginaries of Electrification and Biogas Fuel in Sweden

The choice of fuels has frequently been at the center of debates about how a future low-carbon mobility system can be achieved. This paper introduces two visions of biogas fuels and electricity using material from interviews and documents in Swedish transport. These visions are analyzed as interrelated sociotechnical imaginaries. To better understand the way visions of biogas and electric vehicles (EVs) dynamically shape and condition each other, four dimensions of sociotechnical imaginaries are further developed: spatial boundedness, temporality, coherence and contestation, and the socio-material relations they are associated with. Imaginaries of biogas and EVs differ with respect to these characteristics. The biogas imaginary is made up of locally bounded visions of the desirable future, showing how imaginaries can be fragmented and contested, often because of their embeddedness in local socio-material systems of resource use. This local boundedness is exemplified by contrasting cases of contested biogas imaginaries in the Swedish municipalities of Linköping and Malmö. The imaginary of EVs, in contrast, is more uniform nationally and even influenced by international expectations that in the future vehicles will be shared, electric, and autonomous. The qualities of these imaginaries shape the way they interrelate and coevolve as sociotechnical changes of the transport system unfold.

The semantics of Scandinavian pancake constructions

A classical topic in the syntax of the mainland Scandinavian languages is so-called pancake clauses where there seemingly is disagreement between the subject and the predicative adjective, as in Pannekaker er godt ‘Pancakes(f):indf:pl be:prs good:n:sg’; the subject is in the plural, whereas the predicative adjective is in the neuter singular. According to one of the several approaches, these clauses display a type of semantic agreement. Recently, it has also been argued that there are at least four different types of pancake constructions. In this article, the semantic relationship between the different constructions is investigated further. It is argued that, diachronically, pancake agreement started with subjects interpreted as virtual, ungrounded processes, and that the absence of grounding has been reinterpreted as absence of spatial boundedness in the latest kind of pancake construction. The analysis is supported by a diachronic corpus investigation. The emphasis on virtual reference is a new feature with the current paper, and it enables us to set aside an objection against the semantic agreement analysis. The diachronic corpus investigation enables us to revise, empirically, earlier suggestions as to when the pancake constructions originated: They are well attested from the mid-1800s, in both Swedish and Norwegian Nynorsk.

Three Stories about Regional Salience: ‘Regional Worlds’, ‘Political Mobilisation’, and ‘Performativity’.

Territoriality is an important dimension of knowledge production and application. Despite the ethereal nature of the product itself, knowledge is thought to originate from, and be anchored to, particular places. Over the last decades, studies on themes such as Innovation Systems and knowledge spillovers have pointed at and further explored the spatial dimension of knowledge production, suggesting that due to spatial boundedness of knowledge the region presents an essential site for innovation, production and policy-makers. To review this message of regional salience three stories are presented: The first story, the institutional-economic account, features the role of the economy. The second story features political actors and processes, and the way these have promoted and mobilised the region as a significant site of innovation, production and policy-making. The third story focuses on the message of regional salience itself, with as protagonists the authors of the message, namely academics. The conclusion will bring the various stories together, suggesting how the story of performativity bears on the story on political mobilisation, and how both these stories may serve to put the institutional-economic account into perspective.

On the Use of POCS for Restoring the “Missing Wedge” in Electron Tomography

Reconstructions of asymmetric objects computed by electron tomography are distorted due to the absence of information, usually in an angular range from 60 to 90°, which produces a “missing wedge” in Fourier space. These distortions often interfere with the interpretation of results and thus limit biological ultrastructural information which can be obtained. We have attempted to use the Method of Projections Onto Convex Sets (POCS) for restoring the missing information. In POCS, use is made of the fact that known constraints such as positivity, spatial boundedness or an upper energy bound define convex sets in function space. Enforcement of such constraints takes place by iterating a sequence of function-space projections, starting from the original reconstruction, onto the convex sets, until a function in the intersection of all sets is found. First applications of this technique in the field of electron microscopy have been promising.To test POCS on experimental data, we have artificially reduced the range of an existing projection set of a selectively stained Golgi apparatus from ±60° to ±50°, and computed the reconstruction from the reduced set (51 projections). The specimen was prepared from a bull frog spinal ganglion as described by Lindsey and Ellisman and imaged in the high-voltage electron microscope.