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| 2. |
- Eriksson, Johanna, 1978, et al.
(författare)
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Attitudes and experiences of user involvement in early stages of residential projects
- 2012
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Ingår i: ENHR Conference 2012.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- One factor influencing quality development in the building industry is the ability of users, such as residents, to identify and express their requirements for the product, i.e., the residential building. Drawing on a study of the development of user involvement in designing, producing, and managing building projects, this paper focuses on user participation in the front-end activities of residential projects. To map current perceptions and approaches, building industry actors met in four focus groups. Group participants were asked to reflect on the definition of user, how communication is handled, how information from users is used, and challenges and opportunities in involving the user. Regardless of level of experience, participants agreed on the importance and potential of user involvement and on the need for specific methods to acquire useful outputs.
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| 3. |
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| 4. |
- Geissinger, Andrea, 1987-, et al.
(författare)
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Tracking the institutional logics of the sharing economy
- 2019
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Ingår i: Handbook of the Sharing Economy. - Cheltenham : Edward Elgar Publishing. - 9781788110549 - 9781788110532 ; , s. 177-192
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- This chapter explores field-level logics associated with the sharing economy and how these logics can be categorized in relation to different characteristic features of that economy. It thereby links together core principles of the sharing economy-the access, platform and community-based economy-with market and non-market orders so as to create a better understanding for those tensions being part of the sharing economy and how they can be overcome. Empirically, the chapter analyzes 7362 social media posts and defines field-level logics through juxtaposing the core principles with market/non-market orders. Six field-level logics are identified: abundance, scarcity, profit, sustainability, global and local logics. The sorting tool of these field-level logics and their associated institutional orders provides clarity in relation to the blurred concepts of accessing, sharing and transferring; the variety of motives of users/consumers; and the reasons for parties to provide their services within the sharing economy. The chapter also contributes to previous research through linking together field-level logics with orders to create understandings for logics on phenomena levels and specifically related to the sharing economy.
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| 6. |
- Holmberg, John, 1963, et al.
(författare)
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Low-carbon transitions and the good life
- 2012
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- A transition to a low-carbon economy requires farreaching reductions in emissions, which in addition will have to take place at the same time as the global population is growing. A growing population also makes ever greater demands on welfare, while the ecological, social and economic systems that have to sustain this development are already under severe strain. It is commonly argued that emission reductions in a growing world economy can and should be achieved by technical innovations so that the transition to a low-carbon economy does not imply a negative impact on human well-being.This report discusses whether there might perhaps be another way of understanding the situation. Is the presumed linkage between well-being and climate impact always negative? Could a greater focus on human well-being be a driver of, rather than an obstacle to, sustainable development? This report attempts to identify possible strategies to support both [the good life] and decreased emissions. By adopting this research approach, the authors aim to make a contribution to the discussion of low-carbon transitions in society.
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| 8. |
- Larsson, Tord
(författare)
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Några inomhusväxters förmåga att påverka luftkvaliteten
- 2004
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- People spend more than 80 % of the day indoors and are mostly exposed to contaminated air. Some authors suggest that indoor plants are good as indoor air cleaners. Authors have studied the sink effect of indoor plants in unventilated closed systems. Unfortunately, the results from these studies cannot be applied in the design of HVAC-systems because they do not contain proper parameters, such as air change rate.In this study the sink and source effects of three different indoor plants have been investigated for carbon dioxide (CO2), formaldehyde (FAD), and total volatile organic compound (TVOC). The measurements have been made in two different climate chambers, a climate box of 0.56 m3 and a clean room of 19.6 m3. Both inlet and outlet air concentrations of CO2, FAD, TVOC, and content of water were measured. In addition the light intensity levels, lux and photoactive radiation (Par), were measured. The three following families of indoor plants have been tested: Epipremnum, Schefflera and Spathiphyllum.A new method of measuring leaf area is described. The plant’s leaf area has been measured with a photo scanner for a selected number of leaves and the relationship between the characteristic length and the area has been calculated using regression analysis. The characteristic length was measured for all leaves of the plants and used to calculate the total leaf area.A special mixture, containing six ordinary volatile organic compounds normally found in indoor air, was used to simulate TVOC. The concentration of TVOC was measured using photo acoustic infrared spectroscopy (PAS).Both single step and double step forward finite difference methods have been used for the calculations of the indoor concentration dilution of contaminants. The latter method is preferred when using one single instrument and a switching valve for monitoring the concentration and gas flow from both the inlet and the outlet of the chamber. In the calculations the influence of the chamber has been taken into consideration.The results show that for the studied plants, the sink effect of CO2 is -0.05 to -0.1 g CO2 m-2 h-1 at day-time (500 lx) and that the source strength at night-time is 0.1 g CO2 m-2 h-1 when the inlet concentration of CO2 air is 400 ppm. If the inlet air concentration is 1500 ppm CO2 the sink effect is larger, ranging from -2 to -6 g CO2 m-2 h-1. The sink effect of FAD is in the range of -0.3 to -1 mg FAD m-2 h-1 (at the background concentration of 0.3 mg FAD m-3), and the sink effect of TVOCpas is -0.25 to - 0.5 mg TVOCpas m-2 h-1 (at the background concentration of 1-2 mg TVOCpas m-3). The source strength of water is in the range of 0.005-0.01 g H2O m-2 h-1 (at nighttime) and 0.008 to 0.01 g H2O m-2 h-1 (at day-time).
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| 9. |
- Larsson, Tord
(författare)
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Växter är inga bra luftrenare
- 2005
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Ingår i: VVS-Forum. ; 2005-10:Teknik&Installation, s. 54-
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 10. |
- Palmkvist, Jakob, 1980
(författare)
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Exceptional Lie algebras and M-theory
- 2008
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- In this thesis we study algebraic structures in M-theory, in particular the exceptional Lie algebras arising in dimensional reduction of its low energy limit, eleven-dimensional supergravity. We focus on e8 and its infinite-dimensional extensions e9 and e10. We review the dynamical equivalence, up to truncations on both sides, between eleven-dimensional supergravity and a geodesic sigma model based on the coset E10/K(E10), where K(E10) is the maximal compact subgroup. The description of e10 as a graded Lie algebra is crucial for this equivalence. We study generalized Jordan triple systems, which are closely related to graded Lie algebras, and which may also play a role in the description of M2-branes using three-dimensional superconformal theories. The introductory part is followed by five research papers.In Paper I we show that the spinor and vector-spinor representations of k(e10) in the fermionic extension of the original E10 coset model lead, upon restriction to k(e9), to the R-symmetry transformations in eleven-dimensional supergravity reduced to two dimensions. Paper II provides an explicit expression for the primitive E8 invariant tensor with eight symmetric indices, which is expected to appear in M-theory corrections in the reduction to three dimensions. In Paper III we show that e8, e9 and e10 can be constructed in a unified way from a Jordan algebra, via generalized Jordan triple systems. Also Paper IV deals with generalized Jordan triple systems, but in the context of superconformal M2-branes. We show that the recently proposed theories with six or eight supersymmetries can be expressed in terms of a graded Lie algebra. In Paper V we return to the bosonic E10 coset model, and apply it to gauged maximal supergravity in three dimensions.
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