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- 2019
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Tidskriftsartikel (refereegranskat)
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| 2. |
- Luan, Tom H., et al.
(författare)
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Guest Editorial : Emerging Technology for 5G Enabled Vehicular Networks
- 2016
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Ingår i: IEEE Transactions on Vehicular Technology. - Piscataway, NJ : IEEE. - 0018-9545 .- 1939-9359. ; 65:10, s. 7827-7830
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Tidskriftsartikel (refereegranskat)abstract
- The papers in this special section focus on 5G mobile communication enabled vehicular networks. This section is designed to provide the academic and industrial communities an excellent venue to present the vision, research, and new solutions on the key technologies emerging for 5G enabled vehicular networks.
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| 3. |
- Cristofer, Englund, 1977-, et al.
(författare)
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Future Applications of VANETs
- 2015
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Ingår i: Vehicular Ad Hoc Networks. - Cham : Springer Publishing Company. - 9783319154961 - 9783319154978 ; , s. 525-544
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Bokkapitel (refereegranskat)abstract
- Current transportation systems face great challenges due to the increasing mobility. Traffic accidents, congestion, air pollution, etc., are all calling for new methods to improve the transportation system. With the US legislation in progress over vehicle communications and EU’s finalization of the basic set of standards over cooperative intelligent transportation systems (C-ITS), vehicular ad hoc network (VANET) based applications are expected to address those challenges and provide solutions for a safer, more efficient and sustainable future intelligent transportation systems (ITS). In this chapter, transportation challenges are firstly summarized in respect of safety, efficiency, environmental threat, etc. A brief introduction of the VANET is discussed along with state of the art of VANET-based applications. Based on the current progress and the development trend of VANET, a number of new features of future VANET are identified, together with a set of potential future ITS applications. The on-going research and field operational test projects, which are the major enabling efforts for the future VANET-based C-ITS, are presented. The chapter is of great interest to readers working within ITS for current development status and future trend within the C-ITS area. It is also of interest to general public for an overview of the VANET enabled future transportation system. © Springer International Publishing Switzerland 2015.
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| 4. |
- Kuiper, Pieter, 1960-, et al.
(författare)
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Polarization-dependent nickel 2p x-ray-absorption spectra of La2NiO4+δ
- 1998
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Ingår i: Physical Review B Condensed Matter. - College Park, MD : American Physical Society. - 0163-1829 .- 1095-3795. ; 57:3, s. 1552-1557
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Tidskriftsartikel (refereegranskat)abstract
- We present polarization dependent x-ray-absorption spectra at nickel L edges of well-characterized La2NiO4+δ single crystals. In the stoichiometric compound the splitting between the x2−y2 and the 3z2−r2 orbitals is 0.7 eV, according to a fit of the 2p53d9 multiplet to the spectra. This value is in agreement with an assignment of dd excitations of the optical spectrum. The Ni L edges of the doped compound are consistent with the isotropic prepeak observed at the oxygen 1s edge. Theory does not predict holes on the apex oxygens, but we argue that doping causes a polaronic deformation which reduces the tetragonal distortion of the NiO6 octahedra, and delocalizes the hole over all six ligands.
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| 5. |
- Yang Lin, Shih, 1979-, et al.
(författare)
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Poster : Adaptive Wavelength Adjustment (AWLA) for Cooperative Speed Harmonization
- 2014
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Ingår i: 2014 IEEE Vehicular Networking Conference (VNC). - Piscataway, NJ : IEEE Press. - 9781479976607 ; , s. 113-114, s. 113-114
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Konferensbidrag (refereegranskat)abstract
- Traffic merge on express-ways creates bottlenecks for traffic flow that potentially lead to traffic jams, especially in dense traffic. Cooperative speed harmonization (CSH), where vehicles are grouped and associated to virtual speed waves for group-wise joining at intersections, is proven to be efficient for on-ramp traffic merge. Based on CSH and considering variations of traffic density from joining roads, an adaptive wavelength adjustment (AWLA) mechanism is proposed in this paper. AWLA extends CSH by dynamically adjusting the length of segments in virtual waves according to the traffic densities of the joining roads. Therefore, roads with denser traffic may have larger segments to carry more vehicles through the intersection, which may improve the overall performance. Simulation results have shown that AWLA can achieve lower CO2 emissions and shorter travel time compared to CSH with static segment settings.
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