150371. |
- Leijonhufvud, Gustaf, et al.
(författare)
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Decision-making on Climate Control for Energy Efficiency and Conservation in Historic Buildings
- 2012
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Ingår i: Energy Efficiency in Historic Buildings: Postprints from the Conference : Visby, February 9–11, 2011. - Visby : Gotland University Press. - 9789186343118 ; , s. 70-80
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- A conceptual framework for decision-making about indoor climate control inhistoric buildings is suggested and discussed. Ideas developed in environmentaldecision making are discussed, and it is argued that the two fields share a set offundamental characteristics that make the transfer of ideas legitimate. It is alsosuggested that an improved decision process is a necessary, although not sufficient,step towards sustainable management.
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150372. |
- Leijonhufvud, Gustaf, et al.
(författare)
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Heat pumps for conservation heating
- 2008
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Ingår i: Proceedings of the 8th Symposium on Building Physics in the Nordic Countries (C. Rode, editor), Report R-189.
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Konferensbidrag (refereegranskat)
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150373. |
- Leijonhufvud, Gustaf, 1977-, et al.
(författare)
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Results of the EU Project Climate For Culture: Future Climate-induced Risks to Historic Buildings and their Interiors
- 2014
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Konferensbidrag (refereegranskat)abstract
- The EU funded Climate for Culture (CfC) Project is finalized to forecast the impact ofclimate change on either indoor or outdoor Cultural Heritage and advise on relatedrisks. CfC has produced high-resolution thematic maps over Europe to highlight theexpected changes and related risks for a number of key materials, building types,deterioration mechanisms for the near and far future based on two emissionscenarios as developed by IPCC. The procedure to obtain a thematic map is asfollows: to simulate outdoor climate change; to pass from outdoor to indoor climatechange through building simulation and case studies measurements; to use damagefunctions and literature results to evaluate potential risk for buildings and objects; tomap the above results for advice and stakeholders use. This methodology hasproduced 55,650 thematic maps of future climate induced risks to historic buildingsand collections in their interiors. The results can be used for climate change impactassessments and for planning adaption and mitigation measures in view ofpreventive conservation or other applications, e.g. human health, energyconsumption, cultural tourism. This paper presents some of the main projectoutcomes.
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150374. |
- Leijonhufvud, Gustaf, 1977-, et al.
(författare)
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Uncertainties in damage assessments of future indoor climates
- 2013
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Ingår i: Climate for Collections - Standards and Uncertainties. - Munich. - 9781909492004 ; , s. 405-418
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Konferensbidrag (refereegranskat)abstract
- A significant amount of uncertainty is generated in the processof combining projections of future climate, building simulationsand damage functions to produce risk maps for historic buildings.The objective of this paper is to identify and qualitatively describethe main uncertainties in the production of such maps. The mainsources of uncertainty for each modeling step are identified. It isconcluded that the level of uncertainty in risk maps is so high thatdeterministic approaches have severe limitations, and that furtherresearch is needed to assess the levels of uncertainty introducedby each modeling step.
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150375. |
- Leijonhufvud, Gustaf, 1977-, et al.
(författare)
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What’s behind the façade? : A long-term assessment of the Swedish energy efficiency programme 1977–1984 and its impact on built heritage
- 2018
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Ingår i: <em>The 3<sup>rd</sup>International Conference on Energy Efficiency in Historic Buildings</em>. - Visby. ; , s. 191-198
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Konferensbidrag (refereegranskat)abstract
- Energy ef ciency policies might have a negative impact on the heritage values of buildings, an issue widely recognized in Sweden during and after the extensive energy ef ciency programme ‘Energy savings plan for existing buildings’ (EBB 1977–84). The purpose of this paper is to assess the long-term impact of the EBB on an urban district in Gävle, Sweden. The district comprises 69 single- and multi-family detached houses built between the 1920’s and 1950’s. Using archival sources and field studies we describe how the buildings have been modified and trace the role of the EBB on the district as a whole. The results show that despite that the EBB has had a major impact on the district, it is difficult to disentangle its role in relation to other factors. The study raises concerns over the common approach in policy making to draw distinct lines in the sand between heritage and non-heritage buildings.
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150376. |
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150377. |
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150378. |
- Leijonhufvud, Lotta
(författare)
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The Stockholm temperature series reconstructed back half a millennium by use of proxy data
- 2007
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Konferensbidrag (populärvet., debatt m.m.)abstract
- The sailing season can be used as a proxy for winter temperature. The start of the sailing season is a proxy of ice break-up, which in turn is a very good proxy for mean winter air temperature. (Tarand A & Nordli P.O, 2001) Custom books from the Stockholm harbour exist from 1533 onwards.Do the preserved custom books reflect the length of the sailing season? Or rather, can we assume that the sailing season reflect ice-coverage of the western Baltic region? E.g. during the sixteenth century, the tradition of celebrating Christmas seems to have been deeply rooted. The sailing season practically always ended well before Christmas, which may reflect the “little ice age”, but probably more reflects a traditional society.Another, general, problem with the chosen sources, is that the larger the shipping traffic was, the better the sources reflect ice coverage.The requirements on “open water” may also differ between a large vessel, to one that is smaller. E.g. in late winter/early spring there is a time when the sea is a mixture of ice-floes, thin ice, open water, as well as more solid ice. In such conditions it might be possible to force passage through slush and ice-floes, which might not be dared in a smaller boat. On the other hand, this problem of the development of vessel-sizes, might be superfluous, since the smaller boats might never have occurred in any sources ever, since such boats never paid anything.Preliminary result of spring arrivals and departures at Stockholm harbour 1533-1800. Correlation between arrival/departure dates and winter-temperature (for the period 1722-1800, using the Uppsala temperature by Moberg) is c. r**2 = 0.8.
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150379. |
- Leijonhufvud, Susanna, 1972-
(författare)
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A phenomenological investigation of the phenomenon of singing
- 2012
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Konferensbidrag (refereegranskat)abstract
- The paper will present the results from my licentiate thesis where the phenomenon of Singing Experience from a first-person perspective is treated. The purpose of the thesis was to reveal the content that constitutes the phenomenon of singing from the singers’ point of view. Singing should be understood as a unique vocal expression carried by tones in a form that is sonorous, alive and fluid. The singing is a singing in a context with others who also experiences them selves as singing. The point of departure of the investigation is a natural attitude which develops into a philosophical attitude towards the experience where given experiences are examined upon their content and then bracketed in favour for further experiences of the phenomenon to be revealed. The study uses a phenomenological approach from a first-person perspective based on Edmund Husserl’s transcendent phenomenology. These methods provide cogitations to stretch the particular situated momentary experience into the sphere of the possible experience. In the thesis the result of the eidetic study is described with its general essence a “musical vocal confirmation of my existence in the world” as well as a description of the constitution of the phenomenon of singing. The presentation will initially briefly describe the entry to the study as well as the background and the method of gathering experiences and analysis of ditto. The main part of the presentation will focus on the results of the thesis i.e. a model of a constitution of the phenomenon of singing presented as a mind map where the relationship between essences is visualized. The main topic of the presentation will focus on three major findings. First of all the thoughts about the phenomenological body by Maurice Merleau-Ponty where the phenomenological body of the singer is an acoustic body spread out in time and space is presented. Second the findings of different aspects of experience and listening to one’s own voice is discussed. This finding suggests a possibility to tune in to an inner listening, an outer listening, an immanent listening or a combination of those three different listening modes. This particular result will explicit highlight Husserl’s thinking of pluralistic intentionality. Third, and final, the presentation will discuss the possibility for an extended version of the phenomenon of singing where transcendent dimension of experience emerges. These are dimensions stretched out into a trio of essences; love and humanity, music and thirdly, something divine. These essences, in existence, are experienced as subjects with have the power to act intersubjective with the singing subject of living body. The extension into the transcendent parts enriches and enlarges the phenomenon from a narrow into a widen phenomenon, which covers the possibility of different life-worlds within different singers.
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150380. |
- Leijonhufvud, Susanna, 1972-
(författare)
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Affordances of Music Streaming based on Exploratory Media Archaeology : A presentation of the completed PhD-project Liquid Streaming focusing the affordance of musicking for the public via the Spotify streaming service with an emphasis on method
- 2018
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Konferensbidrag (refereegranskat)abstract
- In my dissertation, I have accounted for the affordances of musicking brought about by streamed music with the case example of Spotify. In order to perform a study orbiting the realm of music streaming, mainly digital sources have been used; Internet sources and software program of the streaming service. In the presentation, I will focus on issues concerning those two major roots. Within the latter I will present, problematize and conclude how; the Internet can be used as a field of sources, and on what terms the Internet can be regarded as an Archive. Also, what alternatives researchers can depend on when practising research within the realm of the Internet. The sources have, over time, been shown to change content, update, disappear, change resolution or package, which means that digital sources such as source material as well as methodology operating in such a field need to be problematized. First of all, I will account for how a phenomenon such as the Spotify streaming service is a multidimensional feature where appearance and featured functions depend on a number of things such as geographical market zone, subscription zone, the digital device used for access, and previous user-generated history. Researching a platform based software program like this brings particular issues for the researcher. I will present how these issues have been recognised and managed in my research. Secondly, I will address Internet as a base for research. The Internet provides a plethora of available sources, and as such Internet brings the affordance of accessing a tremendous amount of data opening up for possibilities that were not available prior to digitalisation. For instance, interviews and talks by interesting people might be available on-line whereas the same persons may be difficult or impossible to reach in ordinary life. Contemporary culture on the Internet, characterised by free culture and shared content further supply massive amount of data to be researched. Further, many services on the Internet provide access to local archives where content can be searched for, and a great number of sources can be screened regarding particular content. The popular phrase: “Once on the Internet, always on the Internet” has been found to be a truth with modification. I will present four different examples of issues concerning using the Internet as an archive and how such issues can be tackled within research concerning questions of reliability and trustworthiness. The first (i) example is how content many times are personalised, why an "objective" or public view can be impossible to gain. Further, it can be impossible to gain access to how personalisation is conducted. The second (ii) example is how sources, such as music, can be limited to certain geographical restrictions and thus only accessed from certain IP-addresses for the researcher. The third (iii) example is how sources may be removed and deleted. This is the case with some personal information as individuals have a right to be forgotten. Another example is how documents from the government offices are removed when there is a new government in office. The fourth (iv) example addresses the issue where a source might remain on the Internet but presented in a different digital format than the original content.
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