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- Klintman, Mikael, et al.
(author)
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Political Consumerism and the Transition Towards a More Sustainable Food Regime Looking Behind and Beyond the Organic Shelf
- 2011
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In: Food Practices in Transition: Changing Food Consumption, Retail and Production in the Age of Reflexive Modernity.
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Book chapter (other academic/artistic)abstract
- Abstract in Undetermined In media, policymaking and research, increasing attention is drawn to the phenomenon of ‘green political consumerism’, referring to consumerrelated practices that are based on concerns beyond the traditional criteria of product quality and price. Political consumerism is about expressing non-economic values, that is, values beyond the direct, economic self-interest of consumers. Such values may concern social conditions of farmers producing our food or the welfare of animals used in food production. Green political consumerism is a concept that highlights a concern for environmental conditions, although these concerns often overlap with social and animal-related ones (Boström & Klintman 2008). Micheletti (2003) has defi ned political consumerism as consumers’ ‘individualistic collective action’, practiced, for instance, through boycotting or buycotting certain products and services. For the purpose of this chapter, it is important to mention that there is a need to keep the defi nition of political consumerism subject to continuous discussion and debate. A main claim in this chapter is that it is particularly important not to equal green political consumption merely with purchases of eco-labeled products and services. To follow such principles of consumption or to have small ecological footprints due to smaller economic resources, for example, are two very diff erent things, which should both be of interest in debates about political consumerism.
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- Gillsjö, David, et al.
(author)
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Semantic Room Wireframe Detection from a Single View
- 2022
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In: 26th International Conference on Pattern Recognition, 2022. - 9781665490634 - 9781665490627 ; , s. 1886-1893
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Conference paper (peer-reviewed)abstract
- Reconstruction of indoor surfaces with limited texture information or with repeated textures, a situation common in walls and ceilings, may be difficult with a monocular Structure from Motion system. We propose a Semantic Room Wireframe Detection task to predict a Semantic Wireframe from a single perspective image. Such predictions may be used with shape priors to estimate the Room Layout and aid reconstruction. To train and test the proposed algorithm we create a new set of annotations from the simulated Structured3D dataset. We show qualitatively that the SRW-Net handles complex room geometries better than previous Room Layout Estimation algorithms while quantitatively out-performing the baseline in non-semantic Wireframe Detection.
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- Baranzahi, Amir, et al.
(author)
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Gas sensitive field effect devices for high temperature
- 1995
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In: Sensors and actuators. B, Chemical. - : Elsevier. - 0925-4005 .- 1873-3077. ; 26:1-3, s. 165-169
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Journal article (peer-reviewed)abstract
- Field effect sensors based on metal-oxide-silicon carbide (MOSiC) devices are used as high temperature gas sensors. They are sensitive to, for example, saturated hydrocarbons and hydrogen and can be operated up to at least 800 degrees C, which make them suitable for several types of combustion control. A metal gate with two layer platinum and a buffer layer of tantalum silicide in between gave a large increase in the long term stability of the sensors. At temperatures below 600 degrees C, the response to ethane in oxygen was shown to have a threshold at a ratio of about 0.38 for the ethane-to-oxygen concentrations. Below this ratio, the surface can be considered as mainly oxygen covered and the response is small. Above this ratio the metal surface is probably mainly hydrogen covered and the response is considerably larger.
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- Baranzahi, Amir, et al.
(author)
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Chemical sensors with catalytic metal gates - Switching behavior and kinetic phase transitions
- 1998
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In: Journal of the Electrochemical Society. - : Electrochemical Society. - 0013-4651 .- 1945-7111. ; 145:10, s. 3401-3406
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Journal article (peer-reviewed)abstract
- Rapid transitions in the response of platinum-based chemical sensors occurring at given hydrogen-oxygen concentration ratios are explained by kinetic phase transitions or switching phenomena on the catalytic metal surface. Below the transition point the response of platinum-insulator silicon carbide devices is small and above the transition it is large. It is found that the critical ratio depends on the operation temperature and the properties of the device. Three different cases are identified, namely, injection-, diffusion-, and reaction-rate-determined transitions. At sufficiently large temperatures the transition is injection limited and occurs at the stoichiometric ratio of hydrogen and oxygen in the gas mixture. The implications of the experimental observations on the applications of chemical sensors with catalytic sensing layers are discussed.
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