| 1. |
- Pashkevich, Natallia, 1983-, et al.
(författare)
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Sustainability through the Digitalization of Industrial Machines : Complementary Factors of Fuel Consumption and Productivity for Forklifts with Sensors
- 2019
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Ingår i: Sustainability. - Basel, Switzerland : MDPI. - 2071-1050. ; 11:23, s. 1-21
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Tidskriftsartikel (refereegranskat)abstract
- Increasing the fuel efficiency of industrial machines through digitalization can enable the transport and logistics sector to overcome challenges such as low productivity growth and increasing CO2 emissions. Modern digitalized machines with embedded sensors that collect and transmit operational data have opened up new avenues for the identification of more efficient machine use. While existing studies of industrial machines have mostly focused on one or a few conditioning factors at a time, this study took a complementary approach, using a large set of known factors that simultaneously conditioned both the fuel consumption and productivity of medium-range forklifts (n = 285) that operated in a natural industrial setting for one full year. The results confirm the importance of a set of factors, including aspects related to the vehicles’ travels, drivers, operations, workload spectra, and contextual factors, such as industry and country. As a novel contribution, this study shows that the key conditioning factors interact with each other in a non-linear and non-additive manner. This means that addressing one factor at a time might not provide optimal fuel consumption, and instead all factors need to be addressed simultaneously as a system.
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| 2. |
- Magnusson, Thomas, 1970-, et al.
(författare)
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Sustainability transitions in tourism : on the transformation of a fragmented sector
- 2024
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Ingår i: Tourism Geographies. - Abingdon, Oxon : Routledge. - 1461-6688 .- 1470-1340.
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Tidskriftsartikel (refereegranskat)abstract
- This conceptual paper argues that there are unrealized benefits from a cross-fertilization between research on sustainable tourism and sustainability transitions studies. With the aim to stimulate such cross-fertilization, the paper identifies three contemporary streams in sustainability transitions studies that are particularly relevant for sustainable tourism: deep transitions, transitions in practice, and the geography of transitions. These three streams present complementary perspectives, which can help reach a more nuanced understanding of transition processes in the tourism sector. The paper concludes that while research on sustainable tourism can benefit from theories, concepts, and frameworks from research on sustainability transitions, research on sustainable tourism can support further conceptual developments in sustainability transitions studies.
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| 3. |
- Ogden, Sam, 1979-, et al.
(författare)
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Fluid behavior of supercritical carbon dioxide with water in a double-Y-channel microfluidic chip
- 2014
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Ingår i: Microfluidics and Nanofluidics. - : Springer Science and Business Media LLC. - 1613-4982 .- 1613-4990. ; 17:6, s. 1105-1112
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Tidskriftsartikel (refereegranskat)abstract
- The use of supercritical carbon dioxide (scCO(2)) as an apolar solvent has been known for decades. It offers a greener approach than, e.g., hexane or chloroform, when such solvents are needed. The use of scCO(2) in microsystems, however, has only recently started to attract attention. In microfluidics, the flow characteristics need to be known to be able to successfully design such components and systems. As supercritical fluids exhibit the exciting combination of low viscosity, high density, and high diffusion rates, the fluidic behavior is not directly transferrable from aqueous systems. In this paper, three flow regimes in the scCO(2)-liquid water two-phase microfluidic system have been mapped. The effect of both total flow rate and relative flow rate on the flow regime is evaluated. Furthermore, the droplet dynamics at the bifurcating exit channel are analyzed at different flow rates. Due to the low viscosity of scCO(2), segmented flows were observed even at fairly high flow rates. Furthermore, the carbon dioxide droplet behavior exhibited a clear dependence on both flow rate and droplet length.
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| 4. |
- Gustafsson, Kerstin, et al.
(författare)
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Direct and indirect effects of the fungicide azoxystrobin in outdoor brackish water microcosms
- 2010
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Ingår i: Ecotoxicology. - : Springer Science and Business Media LLC. - 0963-9292 .- 1573-3017. ; 19:2, s. 431-444
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Tidskriftsartikel (refereegranskat)abstract
- The effects of the strobilurin fungicide azoxystrobin were studied in brackish water microcosms, with natural plankton communities and sediment. Two experiments were conducted: Experiment 1 (nominal conc. 0, 15 and 60 mu g/L, 24-L outdoor microcosms for 21 days) and a second, follow-up, Experiment 2 (nominal conc. 0, 3, 7.5, 15 mu g/L, 4-L indoor microcosms for 12 days). The microcosms represent a simplified brackish water community found in shallow semi-enclosed coastal areas in agricultural districts in the Baltic Sea region. Measured water concentrations of the fungicide (Experiment 1) were, on average, 83 and 62% of nominal concentrations directly after application, and 25 and 30% after 21 days, for the low and high dose treatments, respectively, corresponding to mean DT50-values of 15.1 and 25.8 days, for low and high dose treatments, respectively. In Experiment 1, direct toxic effects on calanoid copepods at both test concentrations were observed. Similarly, in Experiment 2, the copepod abundance was significantly reduced at all tested concentrations. There were also significant secondary effects on zooplankton and phytoplankton community structure, standing stocks and primary production. Very few ecotoxicological studies have investigated effects of plant protection products on Baltic organisms in general and effects on community structure and function specifically. Our results show that azoxystrobin is toxic to brackish water copepods at considerably lower concentrations than previously reported from single species tests on freshwater crustaceans, and that direct toxic effects on this ecologically important group may lead to cascade effects altering lower food webs and ecosystem functioning.
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| 5. |
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| 6. |
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| 7. |
- Ssenku, J. E., et al.
(författare)
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Phytoremediation potential of Leucaena leucocephala (Lam.) de Wit. for heavy metal-polluted and heavy metal-degraded environments
- 2017
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Ingår i: Phytoremediation Potential of Bioenergy Plants. - Singapore : Springer. - 9789811030833 - 9789811030840 ; , s. 189-209
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Regeneration of heavy metal-polluted and heavy metal-degraded sites has remained a global challenge despite the existence of numerous conventional physico-chemical techniques that can be applied. In view of the large size of the degraded areas and the cost implications, the application of the inexpensive “green” and sustainable technique of phytoremediation is unrivalled by any other possible alternative techniques. However, its effectiveness is largely dependent on judicious selection of the plant to be used. We thus assessed the suitability of Leucaena leucocephala for phytoremediation of heavy metal-polluted and heavy metal-degraded sites. L. leucocephala has numerous inherent characteristics that can be exploited to augment phytoremediation and lower the cost of regeneration. The species can survive in harsh environmental conditions with the exception of heavily frosted conditions and occurs in a wide range of ecological settings. The species is fast growing, capable of reaching maturity in 6 to 7 months to produce a vast amount of seeds that can germinate into numerous seedlings to carry on further remediation of the polluted site. It can produce large quantities of phytomass that can accumulate heavy metals and can repeatedly be harvested to regenerate a polluted area through phytoextraction. Heavy metal-laden phytomass of L. leucocephala moulds into furniture and is used for construction to preclude contamination at the site of use. It is excellent on coppicing, thus eliminating the costs of replanting during the phytoremediation programme. The species is endowed with high proficiency for nitrogen fixation through nodule formation and can substantially revitalize microbial mass and micro-bioactivities to pave way for re-establishment of self-sustaining plant communities over the polluted sites. Its flexibility to nodulate with rhizobia of other legumes and its rhizobia to nodulate with other legumes could optimize nitrogen content revitalization of the polluted soils. However, the species is invasive and could be adopted under stringent measures to avoid its spread. It is also very palatable to animals and may thus be of limited application in the phytoremediation of areas accessible to animals. Suitability of the species in heavily polluted areas is minimal as many of the inherent characteristics may not fully be expressed.
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| 8. |
- Chowdhury, Soumitra, 1983-, et al.
(författare)
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Smart Product-Service Systems (Smart PSS) in Industrial Firms : A Literature Review
- 2018
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Ingår i: 10th CIRP Conference on Industrial Product-Service Systems, IPS2 2018, 29-31 May 2018, Linköping, Sweden. - : Elsevier. ; 73, s. 26-31
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Konferensbidrag (refereegranskat)abstract
- During the last few decades, the PSS literature has documented industrial firms' transformation from the product dominant logic of business to product-service bundles constituted by machines and related services. This transformation has had several dramatic implications on firms' profitability, strategy, operations, organizational setting, sales and marketing approaches, and R&D practices. However, more recently, industrial firms have started to adopt various smart technologies that are embedded within the PSS. The use of smart technologies in PSS gives rise to the new types of PSS that are referred to in this paper as Smart PSS. Based on a literature review of 43 papers from relevant academic fields, this paper seeks answer to the following research question: what are the value creating features of smart product service systems (Smart PSS) in industrial firms? We synthesize the knowledge on Smart PSS to provide a definition and show the distinctive features of Smart PSS and propose an agenda for future research.
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| 9. |
- Edvardsson Björnberg, Karin, et al.
(författare)
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Climate and environmental science denial : A review of the scientific literature published in 1990-2015
- 2017
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Ingår i: Journal of Cleaner Production. - : Elsevier. - 0959-6526 .- 1879-1786. ; 167, s. 229-241
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Forskningsöversikt (refereegranskat)abstract
- Denial of scientific findings is neither a new nor an unexplored phenomenon. In the area of environmental science and policy though, the research on denial has not been systematically summarized and analyzed. This article reviews 161 scientific articles on environmental and climate science denial published in peer reviewed international journals in the last 25 years and aims to both identify research gaps and enable learning on the phenomenon. Such knowledge is needed for the increasingly important task to provide effective response to science denial, in order to put an end to its influence on environmental policy making. The review, which is based on articles found in the databases Web of Science, Scopus and Philosopher's Index, shows that denial by far is most studied in relation to climate change, with a focus on Anglo-American countries, where this form of denial is most common. Other environmental issues and other geographical areas have received much less scientific attention. While the actors behind climate science denial, their various motives and the characteristics of their operations have been thoroughly described, more comparative research between issues and countries is needed in order to draw reliable conclusions about the factors explaining the peculiarities of denial. This may in turn lay the ground for developing and actually testing the effectiveness and efficiency of strategies to counter environmental science denial. Irrespective of the ambitions of environmental goals, science-based policies are always preferable. The scientific community therefore needs to increase its efforts to dismantle false claims and to disclose the schemes of denialists.
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| 10. |
- Eklund, Lina, 1982-, et al.
(författare)
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Beyond a dichotomous understanding of online anonymity : bridging the macro and micro level
- 2022
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Ingår i: Sociological Research Online. - : Sage Publications. - 1360-7804. ; 27:2, s. 486-503
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Tidskriftsartikel (refereegranskat)abstract
- Anonymity on the Internet is a contentious issue; by some seen as an important freedom to be protected, while others argue for increased identification to protect groups at risk of exploitation. The debate reflects a dichotomous view of online anonymity; you are, or you are not anonymous. However, anonymity is a complex process played out on different levels and defined by various actors. While empirical studies show this, theoretical synthesis is lacking. This essay provides perspective on anonymity online by comparing two critical cases, online auctions and online gaming, we corroborate results from a 4-year interdisciplinary project with researchers from sociology, economics, and computer and system sciences. We argue that one should talk about anonymities in plural form, as online anonymity is not a state but a relational process. We put forth a conceptual model, which unpacks online anonymity as interdependent macro structures – legal, commercial, and technological – and micro/meso facets – factual, social group, and physical – to be used in future research.
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