1. |
- Alwerud, Anna, et al.
(författare)
-
Biblioteket vid Campus Helsingborg, Lunds universitet
- 2009
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Arbetsbyte för kompetensutveckling är en metod som ofta diskuteras men som verkar svår att genomföra i praktiken. Projektbidrag från Helsingborgs kommun gjorde det möjligt för Helsingborgs stadsbibliotek och Campus Helsingborgs bibliotek att pröva arbetsbyte för elva medarbetare under vintern 2008 – 2009. Detta paper bygger till stor del på de korta rapporter som projektdeltagarna skrev efter avslutat arbetsbyte.
|
|
2. |
- Anderson, Theresa Dirndorfer, et al.
(författare)
-
Storying Research : Conducting Research in New Formats and New Voices
- 2014
-
Ingår i: iConference 2014 Proceedings. - : IDEALS/iSchools. ; , s. 1223-1226, s. 1223-1226
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The session engages with an acute tension evident in scholarly communication: We are witnessing a great deal of innovation and experimentation in relation to the way research is performed and shared. The push towards, and need for, innovation and creativity in academic research is being emphasized to an ever increasing extent. A rich set of digital tools and transdisciplinary engagements have opened the door for research conducted and reported in increasingly hybridised, dynamic and interactive ways. At the same time, academic research is increasingly being evaluated by focusing on quantitative analyses based on publications; analyses which privilege established scholarly practices and publication venues. In the session, we are interested in exploring collectively on the one hand, the voice in and position from which we report on research and - indeed - conduct research. On the other hand, how do we use documents and artefacts to tell our stories? Digital media provide new affordances through a broader selection of modes of representation to present data, results and argumentation. The session is conducted as a 'conversation café', where each café table focuses on one aspect of these opportunities.
|
|
3. |
|
|
4. |
- Andersson, F., et al.
(författare)
-
Deblending seismic data by directionality penalties
- 2016
-
Ingår i: 78th EAGE Conference and Exhibition 2016: Efficient Use of Technology - Unlocking Potential. - : European Association of Geoscientists & Engineers. - 9789462821859
-
Konferensbidrag (refereegranskat)abstract
- In conventional seismic surveys, there is a waiting time between sequentially fired shots. This time is determined such that the deepest reflection of interest is recorded before the following source is fired. In a survey with simultaneous or blended sources, the waiting time between the firing of shots is not dependent on the deepest reflection of interest, it is usually much shorter and/or can have random time delays. Thus, the wavefields due to independent sources are overlapped in the records. The blended data exhibit strong discontinuities in the source direction, in contrast to the coherency expected from seismic measurements. A strategy for deblending could then be to suppress these discontinuities. In this paper, we propose to do this by designing an energy functional that uses a combination of individual functionals that penalize deviations from local plane waves in the reconstructed (deblended) data, as well as a least squares term that penalizes discrepancies between the deblended and the measured data. In this way, we derive a set of coupled nonlinear partial differential equations that we use for the deblending procedure.
|
|
5. |
- Andersson, F., et al.
(författare)
-
Flawless diamond reconstruction for simultaneous source separation
- 2017
-
Ingår i: 79th EAGE Conference and Exhibition 2017. - Netherlands : EAGE Publications BV. - 9789462822177
-
Konferensbidrag (refereegranskat)abstract
- In this paper we prove that the recently introduced method of signal apparition optimally separates signals from interfering sources recorded during simultaneous source seismic data acquisition. By utilizing a periodic sequence of source signatures along one source line, that wavefield becomes separately partially visible in the spectral domain where it can be isolated from interfering signals, processed, and subtracted from the original recordings, thereby separating the wavefields from each other. Whereas other methods for simultaneous source separation can recover data in triangle-shaped region in the spectral domain, signal apparition allows for the exact separation of data in a diamond-shaped region that is twice as large thereby enabling superior reconstruction of separated wavefields throughout the entire data bandwidth.
|
|
6. |
|
|
7. |
|
|
8. |
|
|
9. |
|
|
10. |
|
|