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Abstract'Theory' is a seminal term in sociology. Sociologists tend to ask that articles, chapters and monographs are 'theoretical', 'develop theory' or 'make a theoretical contribution'. Yet, as demonstrated in Gabriel Abend's 2008 article 'The Meaning of 'Theory', it is generally unclear what sociologists mean when they talk about theory. Abend distinguishes seven different meanings sociologists tend to impute to 'theory' and argues that no single definition can usefully capture these substantively different meanings. Counter to Abend, we propose and defend a minimal and versatile theory of theory, which does capture the important common denominators in sociologists' various uses of the term theory. The major strengths of our proposal are that it enables informed and synthetic discussion and fosters reflexivity about differences and similarities between different types of theory. Our minimal theory of theory thus serves as an invitation to a broader conversation about theory in sociology.

AbstractThe recent inclusion of behavioural conditionality in health‐related benefit programmes raises questions about frontline workers' (FWs') discretionary use of sanctioning. Using an experimental vignette design in a survey of 824 FWs in the Norwegian Labour and Welfare Administration (NAV), we investigated whether FWs' perceptions of diagnosis and sick recipients' obligations affect their propensity to sanction for non‐compliance. We find that the recipients' diagnoses did not influence FWs' propensity to sanction for non‐compliance. Recipients with a symptom diagnosis (ME/CFS) were sanctioned to the same degree as those with a diagnosis based on objective medical evidence (Bekhterev's disease). However, FWs who generally found it difficult to impose activity requirements on recipients with health‐related problems were also less prone to enact sanctions. Our results support the notion of competing approaches to activating and sanctioning the sick. FWs who agree that it is difficult to activate the sick also tend to avoid sanctioning, whereas the propensity to sanction is more widespread among those who disagree that activating the sick is difficult.

Eelgrass is a key indicator for the water quality in Europe (WFD, European Union, 2000). However, although water quality has been improved in most Danish water bodies, the eelgrass population does not seem to be recovering. In this study, we validate and further develop a GIS tool designed by Flindt et al. (2016), to evaluate the potential of eelgrass reestablishment in Danish waters. The GIS tool was tested in two large broads of the Limfjorden, Løgstør and Lovns broad (Denmark), where two scenarios are run. The first scenario was set up including modelled data, whereas the second scenario included both monitored and modelled data. All scenarios were validated with monitored data collected over a 5 years period in the two broads. The developed GIS tool highlights areas with eelgrass potential, both for vegetative growth and sexual reproduction, in accordance with those found in situ in the period 2009-2013, in the two investigated broads. A combination of modelled and monitored data was found to be optimal to achieve accurate predictions for eelgrass development in the Limfjorden using this GIS tool. In order to implement the current model or to use this GIS tool in other locations, it is needed to have detailed knowledge of the area in focus, especially on the controlling ecosystem parameters and pressures. This eelgrass GIS tool is been proven to be especially beneficial as site selection tool for marine spatial planning e.g. in relation to the implementation of the WFD and the ICZM directives (WFD, ICZM), to help assessing anthropogenic/targeted environmental impacts e.g. assessing mussel fisheries impacts and is as well a powerful tool to optimize monitoring cost efficiency. Finally, the described GIS tool, originally set for Odense fjord (Denmark) by Flindt et al. (2016), has been validated with data from Limfjorden, corroborating the efficiency of the studied tool in Danish waters.

Environmental policies in the European Union focus on the prevention of hazardous waste and aim to mitigate its impact on human health and ecosystems. However, progress is promoting a shift in perspective from environmental impacts to resource recovery. Municipal solid waste incineration (MSWI) has been increasing in developed countries, thus the amount of air pollution control residues (APCr) and fly ashes (FA) have followed the same upward trend. APCr from MSWI is classified as hazardous waste in the List of Waste (LoW) and as an absolute entry (19 01 07*), but FA may be classified as a mirror entry (19 0 13*/19 01 14). These properties arise mainly from their content in soluble salts, potentially toxic metals, trace organic pollutants and high pH in contact with water. Since these residues have been mostly disposed of in underground and landfills, other possibilities must be investigated to recover secondary raw materials and products. According to the literature, four additional routes of recovery have been found: detoxification (e.g. washing), product manufacturing (e.g. ceramic products and cement), practical applications (e.g. CO2 sequestration) and recovery of materials (e.g. Zn and salts). This work aims to identify the best available technologies for material recovery in order to avoid landfill solutions. Within this scope, six case studies are presented and discussed: recycling in lightweight aggregates, glass-ceramics, cement, recovery of zinc, rare metals and salts. Finally, future perspectives are provided to advance understanding of this anthropogenic waste as a source of resources, yet tied to safeguards for the environment.