The Satellite at the End of the World:Infrastructural Encounters in North Greenland

In this chapter, I examine processes of place-making in Qaanaaq, North Greenland which display how its marginality is produced on different scales. I focus on the mutual co-shaping of local everyday practices and infrastructural systems, which I term ‘infrastructural encounters’. Through stories of key infrastructural sites in Qaanaaq, such as its hotel, satellite ground station and telecommunication station, as well as the local concept “down south” which describes the world south of Qaanaaq, the chapter highlights how infrastructural encounters act in the ongoing making of Qaanaaq, leading to extractive processes in the circulation of people and information, marginalization of Qaanaaq’s internet users and remote control of infrastructure. I draw on fieldwork conducted across multiple sites in Greenland, including interviews with locals and representatives from various functions in Qaanaaq. Through this exploration of infrastructure and everyday life, the chapter sheds light on the ways in which marginality is produced and sustained, and the role that telecommunication infrastructures play in shaping the experiences of those positioned as living ‘on the margins’.In this chapter, I examine processes of place-making in Qaanaaq, North Greenland which display how its marginality is produced on different scales. I focus on the mutual co-shaping of local everyday practices and infrastructural systems, which I term ‘infrastructural encounters’. Through stories of key infrastructural sites in Qaanaaq, such as its hotel, satellite ground station and telecommunication station, as well as the local concept “down south” which describes the world south of Qaanaaq, the chapter highlights how infrastructural encounters act in the ongoing making of Qaanaaq, leading to extractive processes in the circulation of people and information, marginalization of Qaanaaq’s internet users and remote control of infrastructure. I draw on fieldwork conducted across multiple sites in Greenland, including interviews with locals and representatives from various functions in Qaanaaq. Through this exploration of infrastructure and everyday life, the chapter sheds light on the ways in which marginality is produced and sustained, and the role that telecommunication infrastructures play in shaping the experiences of those positioned as living ‘on the margins’

Does the Gap in Family-friendly Policies Drive the Family Gap?

A segregation of the labour market into a family-friendly and a non-family friendly sector has the effect that women self-select into the sectors depending on institutional constraints, preferences for family-friendly working conditions and expected wage differences. We find that neglecting the sector dimension tends to understate the effect of birth-related interruptions in both sectors. The combined effect of a large depreciation effect and no recovery means that females in the non-family friendly sector (e.g. private sector) are punished severely after childbirth. In the family friendly sector (e.g. public sector), we find complete catch up.Fertility; family gap; career interruptions; wages; public vs. private sector

Constituents of a hit parade: Questioning democracy and listener participation in P4 i P1’s Det elektriske barometer

Due to their historically inaccessible nature, public service broadcasters’ media archives have lent themselves primarily to internal refl ection while historical contextualisation of the cultural heritage in these archives has been broadcasters’ prerogative. In this study, digitised material from the Danish youth radio programme P4 i P1’s Det elektriske barometer forms the basis for an experiment into how access to digital archives can inform humanities scholarship. We argue that one important implication of the new digital archives is that they enable approaches independent of broadcasters’ own narratives since they off er the possibility for autonomous study of large quantities of material. The character of listener participation in Det elektriske barometer, which had the slogan ‘the listener-determined hit parade’, is approached from a micro-, meso-, and macro-level employing Carpentier’s concept of participation (2011b), to explore how diff erent approaches to digital archives can provide new answers to media’s self-presentation

Type of Anesthesia Influences Positron Emission Tomography Measurements of Dopamine D2/3 Receptor Binding in the Rat Brain

Rats are often anesthetized prior to positron emission tomography (PET) brain imaging in order to prevent head movements. Anesthesia can be administered by inhalation agents, such as isoflurane (Forene), or injection mixtures, such as fentanyl-fluanisone-midazolam (Hypnorm-Dormicum). Unfortunately, anesthesia affects a variety of physiological variables, including those in the brain. The aim of this study was to compare the effects of inhalation and injection anesthesia on the binding potential of the dopaminergic D2/3 tracer [11C]raclopride used for PET brain imaging in human and animal studies. Male Lewis rats were assigned to either inhalation (isoflurane; N=4) or injection (fentanyl-fluanisone-midazolam; N=5) anesthesia. Isoflurane was given continuously, and fentanyl-fluanisone-midazolam was supplemented every 30-60 minutes when the tail reflex was positive. Catheters were surgically placed in femoral arteries and veins for blood sampling and tracer injection. After a short attenuation scan, the rats were PET scanned for 90 minutes after injection of [11C]raclopride. We found that rats anesthetized with isoflurane had double the binding potential in the striatum compared with fentanyl-fluanisone-midazolam anesthetized rats. Our results are in agreement with other studies showing that anesthesia may have a major influence on brain imaging studies involving tracer kinetics in rats

Applying Chemometrics to Evaluate Mine Tailings’ Potential As Partial Cement Replacement

This study investigates the utilization of mine tailings, the by-product originating from metal- and mineral-based ore mining, as a new cement replacement material. This paper is based on the chemical and physical characteristics of 13 mine tailing samples. In this study, Chemometrics were applied to consider all parameters simultaneously and obtain a thorough screening of potential relations in the large data set. Hierarchical Cluster Analysis (HCA) groups samples according to (dis)similar features and Principal Component Analysis (PCA) visualizes predominating variables and relations to samples. The application of HCA highlighted a clear grouping between mine tailings according to characteristics. Meanwhile, PCA identified the predominant chemical and physical characteristics in the mine tailing samples. Chemometrics therefore provided a thorough overview of mine tailings’ physical and chemical characteristics. Keywords: mine tailings, chemometrics, cement replacemen

Monitoring variables affecting positron emission tomography measurements of cerebral blood flow in anaesthetized pigs

Abstract Background Positron emission tomography (PET) imaging of anaesthetized pig brains is a useful tool in neuroscience. Stable cerebral blood flow (CBF) is essential for PET, since variations can affect the distribution of several radiotracers. However, the effect of physiological factors regulating CBF is unresolved and therefore knowledge of optimal anaesthesia and monitoring of pigs in PET studies is sparse. The aim of this study was therefore to determine if and how physiological variables and the duration of anaesthesia affected CBF as measured by PET using [15O]-water in isoflurane–N2O anaesthetized domestic female pigs. First, we examined how physiological monitoring parameters were associated with CBF, and which parameters should be monitored and if possible kept constant, during studies where a stable CBF is important. Secondly, we examined how the duration of anaesthesia affected CBF and the monitoring parameters. Results No significant statistical correlations were found between CBF and the nine monitoring variables. However, we found that arterial carbon dioxide tension (PaCO2) and body temperature were important predictors of CBF that should be observed and kept constant. In addition, we found that long-duration anaesthesia was significantly correlated with high heart rate, low arterial oxygen tension, and high body temperature, but not with CBF. Conclusions The findings indicate that PaCO2 and body temperature are crucial for maintaining stable levels of CBF and thus optimizing PET imaging of molecular mechanisms in the brain of anaesthetized pigs. Therefore, as a minimum these two variables should be monitored and kept constant. Furthermore, the duration of anaesthesia should be kept constant to avoid variations in monitoring variables