| 1. |
- Dantonello, Tobias M., et al.
(författare)
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Initial patient characteristics can predict pattern and risk of relapse in localized rhabdomyosarcoma
- 2008
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Ingår i: Journal of Clinical Oncology. - 1527-7755. ; 26:3, s. 406-413
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Tidskriftsartikel (refereegranskat)abstract
- Purpose Evaluation of primary tumor-, treatment-, and patient-related factors predicting relapse pattern, risk, and survival after relapse with the aim to design a risk-adapted, tumor- directed surveillance program for patients with localized rhabdomyosarcoma (RMS). Patients and Methods One thousand one hundred sixty-four patients with nonmetastatic RMS achieved complete remission at the end of multimodal therapy in the consecutive trials of the Cooperative Weichteilsarkom Studiengruppe (CWS)-81, CWS-86, CWS-91, and CWS-96 between 1980 and 2002 ( median follow-up, 5 years). Three hundred thirty-seven of these individuals developed either locoregional, metastatic, or combined relapses. Predictive factors for relapse, its pattern, and postrelapse survival were analyzed. Results Age, histology, tumor size, tumor site, postsurgical stage, and omission of radiotherapy were identified as factors associated with an increased relapse risk in multivariate analyses. Relapse rates did not differ among the CWS trials. Median time to relapse was 1.43 years from first diagnosis ( range, 0.13 to 13.5 years). There were 217 locoregional, 72 metastatic, and 48 combined recurrences. Only two patients developed metastases more than 4 years after diagnosis, and both had combined recurrences. Five-year postrelapse survival was 24%. Patient subsets with consistent relapse pattern, risk, and postrelapse survival rates were identified on the basis of histologic subtype and tumor size. Conclusion Initial patient and tumor characteristics predict pattern and risk of relapse and also correlate with postrelapse survival probabilities. In localized RMS, tumor- directed follow-up should focus on the primary site. Screening for metastatic relapse may not be necessary more than 4 years after diagnosis. The identification of subgroups with distinctive pattern and risk of relapse may be used to develop risk-adapted, tumor- directed guidance for detection of recurrent disease in localized RMS.
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| 2. |
- Forsberg, Ann-Kristin, et al.
(författare)
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An augmented-reality approach to co-located visual exploration of indoor climate data in real rooms
- 2005
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Ingår i: Indoor Air 2005: Proceedings of the 10th International Conference on Indoor Air Quality and Climate. - 9787894948304 ; , s. 2860-2860
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- We live in two spaces, the visible space and the non-visible but otherwise sensed space. Both spaces must satisfy our needs and there is a relation between them. If parts of the room are too cold this will lead to a restriction of the use of the room. We cannot endure draft for any longer time. Draft caused by a ventilation supply frequently leads to blockage of the supply device, which in turn gives rise to a reduction of the ventilation rate. The final result may be a deterioration of the air quality. Therefore, to be able to guarantee the air quality it is necessary to make the invisible thermal climate visible. In this paper a novel method based on Augmented Reality for presenting die thermal climate is presented and discussed. The data, e.g. temperatures and velocities, are shown on a lightweight display. Several people can walk around in a real room and see on a screen where the hot and/or cold spots may appear. Different ventilation solutions could in that way be compared in a dialogue between different actors in the building process.
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| 3. |
- Mu, Mu
(författare)
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An Interview with Video Quality Experts.
- 2009
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Annan publikation (refereegranskat)abstract
- Through previous studies in the field, SIGMM members have recognised that research in multimedia must consider aspects of human perception and user preference. Ultimately the improvement of the user level quality-of-experience is more desirable than the more easily measurable quality-of-service.
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| 4. |
- Pettersson, Lars Winkler, et al.
(författare)
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Visualization of symbols in a horizontal multiple viewer 3D display environment
- 2005
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Ingår i: Proceedings of IEEE Information Visualization 2005. ; , s. 357-362
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- In this paper we present a visualization environment for collaborative and co-located displays of geospatially related data for command and control. We first describe the working principle of a novel horizontal display that is aimed at providing high resolution stereoscopic 3D visualizations simultaneously to a group of up to four observers. This display environment opens up new ways to present view-dependent visual content within a shared workspace. For this environment we propose frontoparallel presentations of conventional symbols that are 3D presentations of 2D symbols which appear virtually oriented towards the line of sight of the observer. In an experiment we compare frontoparallel symbols with flat symbols i.e. symbols that are presented in the horizontal plane of the display. The results of our study indicate that frontoparallel symbols in a stereoscopic view are perceived and identified faster than symbols presented flat in relation to the plane of the display.
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| 5. |
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| 6. |
- Seipel, Stefan, et al.
(författare)
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PixelActiveSurface : A tabletop rear-projection display for collaboration with pixel-accurate interaction
- 2007
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The use of table-top displays as working environment provides a very natural way to present and interact with information. In particular when several users intend an unhindered face-to-face dialogue, horizontal displays have been introduced as efficient tools for collaborative work in shared physical spaces. Many of the hardware systems presented so far are composed of several independent and technically often clumsy components for the display and for tracking of users' head positions or gestures, respectively. This hampers, in practice, easy operation and a more widespread use of table-top displays in real working environments. In this paper, we present our technical solution for a fully integrated, small sized table-top visualization environment that provides head position tracking for two collaborating users, stereoscopic projection and high resolution multi-point screen interaction. Our solution is intended as a self-contained out-of-the-box system that is affordable and easy to use. The real novelty with our technique presented in this paper is, however, that we succeeded in combining high resolution and multi-point pen-based interaction technology based on optical pattern recognition with a rear-projection screen, which opens up for a wider field of applications not only limited to tabletop display environments.
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| 7. |
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| 8. |
- Winkler Pettersson, Lars, 1974-
(författare)
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Collaborative Visualization : Designing and evaluating systems for co-located work
- 2008
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This thesis investigates new ways of using information visualization to support collaboration in co-located work. To study this phenomenon, Multiple Viewer Display Environments (MVDEs) with independent views have been applied to present information such that all viewers at the same time and in the same display can see correct views of 3D models, see correctly oriented text and see different parts and aspects of information in each view. Several prototypes have been developed either as proof of new conceptual designs or to evaluate particular research questions. These prototypes have been used to investigate general properties that apply to co-located collaborative visualizations. A prototype system to keep track of the viewpoints and information in the independent views was implemented on MVDE hardware to support discussions on future command and control environments and to provide the necessary framework for conducting empirical studies (Paper II). Another prototype, the in situ tomographic display, was developed to support presentation of spatial 3D data (e.g., temperature or airflow) in 2D views in situ with working environments (Paper III). In addition to the visualization systems, a technique for high precision pen-based interaction in rear-projection display environments - the PixelActiveSurface – was developed (Papers IV and V). The empirical studies evaluate how new forms of visualization in MVDEs with independent views affect the way information is perceived and can be shared in collaboration. The conclusion is that multiple independent views can provide more effective and efficient visualization when the following conditions are met: text is oriented towards the viewer (Paper VI), different aspects of information are coordinated between different views of the same display (Paper VIII) and correct views of 3D models are used to compare ordinal information and relations in spatial data (Paper VII). However, for the techniques to support co-located work efficiently, it is necessary that the type of work and the task to be solved are first properly analyzed and understood (Papers VII and IX).
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