| 1. |
- Arnold, Oliver, et al.
(författare)
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Capturing the Environmental Impact of Individual Lifestyles : Evidence of the Criterion Validity of the General Ecological Behavior Scale
- 2018
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Ingår i: Environment and Behavior. - : SAGE PUBLICATIONS INC. - 0013-9165 .- 1552-390X. ; 50:3, s. 350-372
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Tidskriftsartikel (refereegranskat)abstract
- Do behavioral measures of ecological lifestyles reflect actual environmental impact? Three convenience samples of German adults (N = 881) completed such a measure, the General Ecological Behavior (GEB) scale. Their household electricity consumption was self-reported (Study 1), assessed by a smart-meter (Study 2), or reported by the power company (Study 3). The latter two studies controlled for income, which can boost consumption just as it opens possibilities for behaving ecologically. Within and across studies, analyses revealed a negative association between self-reported ecological behavior and electricity consumption (-.18 rs -.22), even with adjustment for income. Furthermore, customers in a green electricity program reported more ecological engagement and consumed one third less electricity than did regular customers. These results indicate the criterion validity of the GEB scale for a highly practically relevant criterion and encourage the use of generic behavior measures in efforts to understand and foster more ecological lifestyles.
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| 2. |
- Babin, Charles, et al.
(författare)
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Fabrication and nanophotonic waveguide integration of silicon carbide colour centres with preserved spin-optical coherence
- 2022
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Ingår i: Nature Materials. - : NATURE PORTFOLIO. - 1476-1122 .- 1476-4660. ; 21, s. 67-73
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Tidskriftsartikel (refereegranskat)abstract
- Colour centres are a promising quantum information platform, but coherence degradation after integration in nanostructures has hindered scalability. Here, the authors show that waveguide-integrated V-Si centres in SiC maintain spin-optical coherences, enabling nuclear high-fidelity spin qubit operations. Optically addressable spin defects in silicon carbide (SiC) are an emerging platform for quantum information processing compatible with nanofabrication processes and device control used by the semiconductor industry. System scalability towards large-scale quantum networks demands integration into nanophotonic structures with efficient spin-photon interfaces. However, degradation of the spin-optical coherence after integration in nanophotonic structures has hindered the potential of most colour centre platforms. Here, we demonstrate the implantation of silicon vacancy centres (V-Si) in SiC without deterioration of their intrinsic spin-optical properties. In particular, we show nearly lifetime-limited photon emission and high spin-coherence times for single defects implanted in bulk as well as in nanophotonic waveguides created by reactive ion etching. Furthermore, we take advantage of the high spin-optical coherences of V-Si centres in waveguides to demonstrate controlled operations on nearby nuclear spin qubits, which is a crucial step towards fault-tolerant quantum information distribution based on cavity quantum electrodynamics.
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| 3. |
- Bowler, Peter A., et al.
(författare)
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A role for ecological restoration work in university environmental education
- 1999
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Ingår i: Journal of Environmental Education. - 0095-8964. ; 30:4, s. 19-26
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Tidskriftsartikel (refereegranskat)abstract
- The effects of ecological restoration field work and in-class instruction on students’ ecological behavior, environmental attitudes, and perceptions of restorative qualities in a natural environment were studied in 3 classes of university undergraduates (
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| 4. |
- Byrka, Katarzyna, et al.
(författare)
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Environmental attitude as a mediator of the relationship between in nature and self-reported ecological behavior
- 2010
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Ingår i: Psychological Reports. - 0033-2941 .- 1558-691X. ; 107:3, s. 847-859
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Tidskriftsartikel (refereegranskat)abstract
- Environmental attitude and ecological behavior were investigated in relation to the use of nature for psychological restoration. Specifically, with survey data from 468 German university students, the role of environmental attitude was investigated as a mediator of the restoration-behavior relationship. Assuming that positive experiences in nature can have a broad influence on environmental attitudes, the New Ecological Paradigm (NEP) scale, an attitudinal measure with broad scope, was adopted. Hierarchical regression analyses indicated partial mediation by environmental concern. The study helps to consolidate the restoration theme in the growing literature on positive motivations for ecological behavior.
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| 5. |
- Gifford, Robert, et al.
(författare)
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Temporal pessimism and spatial optimism in environmental assessments: An 18-nation study
- 2009
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Ingår i: Journal of Environmental Psychology. - : Elsevier BV. - 0272-4944. ; 29, s. 1-12
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Tidskriftsartikel (refereegranskat)abstract
- The personal assessments of the current and expected future state of the environment by 3232 community respondents in 18 nations were investigated at the local, national, and global spatial levels. These assessments were compared to a ranking of each country's environmental quality by an expert panel. Temporal pessimism (“things will get worse”) was found in the assessments at all three spatial levels. Spatial optimism bias (“things are better here than there”) was found in the assessments of current environmental conditions in 15 of 18 countries, but not in the assessments of the future. All countries except one exhibited temporal pessimism, but significant differences between them were common. Evaluations of current environmental conditions also differed by country. Citizens' assessments of current conditions, and the degree of comparative optimism, were strongly correlated with the expert panel's assessments of national environmental quality. Aside from the value of understanding global trends in environmental assessments, the results have important implications for environmental policy and risk management strategies.
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| 6. |
- Griessl, René, et al.
(författare)
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A Scalable, Heterogeneous Hardware Platform for Accelerated AIoT based on Microservers
- 2023
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Ingår i: Shaping the Future of IoT with Edge Intelligence How Edge Computing Enables the Next Generation of IoT Applications. - 9788770040273 ; , s. 179-196
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Performance and energy efficiency are key aspects of next-generation AIoT hardware. This chapter presents a scalable, heterogeneous hardware platform for accelerated AIoT based on microserver technology. It integrates several accelerator platforms based on technologies like CPUs, embedded GPUs, FPGAs, or specialized ASICs, supporting the full range of the cloud−edgeIoT continuum. The modular microserver approach enables the integrationof different, heterogeneous accelerators into one platform. Benchmarking the various accelerators takes performance, energy efficiency, and accuracy into account. The results provide a solid overview of available accelerator solutions and guide hardware selection for AIoT applications from the far edge to the cloud.
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| 7. |
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| 8. |
- Hartig, Terry, et al.
(författare)
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Psychological restoration in nature as a source of motivation for ecological behaviour
- 2007
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Ingår i: Environmental Conservation. - 0376-8929 .- 1469-4387. ; 34:4, s. 291-299
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Tidskriftsartikel (refereegranskat)abstract
- People may behave in environmentally friendly ways because they gain psychologically from their experiences in natural environments. Psychological benefits of nature experience may also underlie concerns about personally harmful effects of environmental problems. Cross-sectional survey data from 1413 Norwegian adults were used to assess the relationship between use of natural environments for psychological restoration and ecological behaviour, as mediated by personal environmental concern. Mediation tests with hierarchical regression analyses provided evidence of partial mediation; the use of natural environments for restoration remained a significant predictor of ecological behaviour after the entry of environmental concern into the analysis. These associations held independently of age, gender, education, household income, size of community of upbringing, size of community of current residence and distance of current residence from an outdoor recreation area. Among sociodemographic variables, only gender had a significant association with the use of natural environments for restoration, suggesting that their use transcends several important social categories in Norway. In short, positive experiences in natural environments may promote ecological behaviour.
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| 9. |
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| 10. |
- Heiler, Jonah, et al.
(författare)
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Spectral stability of V2 centres in sub-micron 4H-SiC membranes
- 2024
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Ingår i: NPJ QUANTUM MATERIALS. - : NATURE PORTFOLIO. - 2397-4648. ; 9:1
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Tidskriftsartikel (refereegranskat)abstract
- Colour centres in silicon carbide emerge as a promising semiconductor quantum technology platform with excellent spin-optical coherences. However, recent efforts towards maximising the photonic efficiency via integration into nanophotonic structures proved to be challenging due to reduced spectral stabilities. Here, we provide a large-scale systematic investigation on silicon vacancy centres in thin silicon carbide membranes with thicknesses down to 0.25 mu m. Our membrane fabrication process involves a combination of chemical mechanical polishing, reactive ion etching, and subsequent annealing. This leads to highly reproducible membranes with roughness values of 3-4 A, as well as negligible surface fluorescence. We find that silicon vacancy centres show close-to lifetime limited optical linewidths with almost no signs of spectral wandering down to membrane thicknesses of similar to 0.7 mu m. For silicon vacancy centres in thinner membranes down to 0.25 mu m, we observe spectral wandering, however, optical linewidths remain below 200 MHz, which is compatible with spin-selective excitation schemes. Our work clearly shows that silicon vacancy centres can be integrated into sub-micron silicon carbide membranes, which opens the avenue towards obtaining the necessary improvements in photon extraction efficiency based on nanophotonic structuring.
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