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- Aamodt, K., et al.
(författare)
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Alignment of the ALICE Inner Tracking System with cosmic-ray tracks
- 2010
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Ingår i: Journal of Instrumentation. - 1748-0221. ; 5
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Konferensbidrag (refereegranskat)abstract
- ALICE (A Large Ion Collider Experiment) is the LHC (Large Hadron Collider) experiment devoted to investigating the strongly interacting matter created in nucleus-nucleus collisions at the LHC energies. The ALICE ITS, Inner Tracking System, consists of six cylindrical layers of silicon detectors with three different technologies; in the outward direction: two layers of pixel detectors, two layers each of drift, and strip detectors. The number of parameters to be determined in the spatial alignment of the 2198 sensor modules of the ITS is about 13,000. The target alignment precision is well below 10 mu m in some cases (pixels). The sources of alignment information include survey measurements, and the reconstructed tracks from cosmic rays and from proton-proton collisions. The main track-based alignment method uses the Millepede global approach. An iterative local method was developed and used as well. We present the results obtained for the ITS alignment using about 10(5) charged tracks from cosmic rays that have been collected during summer 2008, with the ALICE solenoidal magnet switched off.
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| 4. |
- Cai, D. Q., et al.
(författare)
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A study of control chart for adjusted processes
- 1999
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Ingår i: The 26th International Conference on Computers & Industrial Engineering (the 26th C & IE) : December 15-17, 1999, Melbourne, Australia. ; , s. 443-447, s. 443-447
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Konferensbidrag (refereegranskat)
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| 5. |
- Kanaki, K., et al.
(författare)
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Statistical energy determination in neutron detector systems for neutron scattering science
- 2013
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Ingår i: IEEE Nuclear Science Symposium Conference Record. - : IEEE conference proceedings. - 9781479905348 ; , s. Art. no. 6829644-
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Konferensbidrag (refereegranskat)abstract
- The energy determination of thermal and cold neutrons could revolutionize the field of neutron scattering science and transform the instrument design for future facilities. This contribution evaluates the feasibility and potential of a statistical determination of the neutron energy in the new generation of neutron detectors. In particular, the novel technology of multi-layer 10B thin film detectors present a unique opportunity of exploiting this possibility by using the various neutron penetration depths to extract energy information. A statistical mathematical model for doing so is being developed. To this end, measurements of absorption profiles on boron carbide have been performed at the Institutt for Energiteknikk, Norway and the Helmholtz Zentrum Berlin, Germany. The results of the data analysis allow for a preliminary estimate on the feasibility and the potential of this method. © 2013 IEEE.
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| 8. |
- Ta, D., et al.
(författare)
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A framework for performance evaluation of large-scale interactive distributed virtual environments
- 2010
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Ingår i: Proceedings - 10th IEEE International Conference on Computer and Information Technology, CIT-2010, 7th IEEE International Conference on Embedded Software and Systems, ICESS-2010, ScalCom-2010. - 9780769541082 ; , s. 2744-2751
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Konferensbidrag (refereegranskat)abstract
- Interactivity is a key consideration in large-scale distributed virtual environments (DVEs), such as massively multi-player online games. Due to the Internet dynamics as well as the large-scale and distributed nature of many DVEs, it is difficult to quantify the possible improvements claimed by various DVE interactivity enhancement approaches. In this paper, we propose a scalable framework that supports evaluation of interactivity indicators, under dynamic Internet conditions. We have developed and used this framework to conduct extensive experiments on Planet-Lab with many distributed client and server locations. We have collected the latency experienced by over 700 client locations distributed around the globe over a few days; and used it for evaluating performance of some recently proposed zone mapping algorithms.
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| 9. |
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| 10. |
- Zhu, H., et al.
(författare)
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Neural correlates of stereoscopic depth perception : A fNIRS study
- 2016
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Ingår i: 2016 Progress In Electromagnetics Research Symposium, PIERS 2016 - Proceedings. - : Institute of Electrical and Electronics Engineers (IEEE). - 9781509060931 ; , s. 4442-4446
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Konferensbidrag (refereegranskat)abstract
- The aim of the present study was to explore the brain region correlated with stereoscopic depth perception with different degree of binocular disparities. fNIRS was used to measure the neural activity of the occipital cortex induced by random-dot stereogram (RDS) with disparities from 0.1° to 1.5° and analyzed the strength and activation pattern from participants with left and right eyedness. Results revealed that the visual cortex was spatial correlated with the binocular disparity and there was a left lateralization effect for right-eye-dominant participants. Furthermore, binocular disparity around 0.5° led the strongest activation, whereas binocular disparity exceed 1.1° led lower activation which could be caused by visual fatigue. The present study supported the feasibility of fNIRS to assess the neural correlates of stereoscopic depth perception, to optimize the stereoscopic vision, and to objective evaluation of visual fatigue.
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