| 1. |
- Fan, Jin, et al.
(författare)
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Design of Novel Flat Bend Crossed Dipole for Wideband Phased Array Feed Applications
- 2019
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Ingår i: 2019 International Symposium on Antennas and Propagation, ISAP 2019 - Proceedings.
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Konferensbidrag (refereegranskat)abstract
- This paper presents a novel Phased Array Feed (PAF) element based on flat bend crossed dipole fed by 50-Ohm coaxial line. The PAF element is dual-polarized and made from all-metal to minimize Ohmic losses and simplify cryogenic integration. It is optimized for 4- 8 GHz band aiming to possible later integration in the SKA pathfinder PHAROS2. The proposed design can also be a good element candidate of PAF for the Five hundred meter Aperture Spherical Telescope (FAST) and Qi Tai Telescope (QTT) as well as other large radio telescopes.
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| 2. |
- Fan, Jin, et al.
(författare)
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Design of Octave-bandwidth Phased Array Feed for Large Radio Telescope
- 2019
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Ingår i: 13th European Conference on Antennas and Propagation, EuCAP 2019.
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Konferensbidrag (refereegranskat)abstract
- This paper presents design scenarios of Octave-bandwidth Phase Array Feed (PAF) based on a novel wideband dual polarized tightly-fed Bowtie antenna element. The PAF is optimized for the 4 - 8GHz band aiming to possible later integration in the SKA pathfinder PHAROS2. The proposed design can be a good candidate of PAF for the Five hundred meter Aperture Spherical Telescope (FAST) and Qi Tai Telescope (QTT) as well as other large radio telescopes.
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| 3. |
- Fan, Jin, et al.
(författare)
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Design of Ultra-Wideband Phased Array Feed for Radio Telescope
- 2020
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Ingår i: 2020 33rd General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2020.
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Konferensbidrag (refereegranskat)abstract
- This paper presents an ultra-wideband Phased Array Feed (PAF) based on novel flat bend crossed dipole fed by 50Ohm coaxial line. The PAF is dual-polarized and made from all-metal to minimize Ohmic losses and simplify cryogenic integration. It is optimized for 1-2 GHz band and can be good PAF candidate for the Five hundred meter Aperture Spherical Telescope (FAST) and Qi Tai Telescope (QTT) as well as other radio telescopes.
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| 4. |
- Fan, Liangdong, et al.
(författare)
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Electrolysis study of ceria-carbonate composite for effective H2 production
- 2013
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Ingår i: EFC 2013 - Proceedings of the 5th European Fuel Cell Piero Lunghi Conference. - 9788882862978 ; , s. 79-80
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Konferensbidrag (refereegranskat)abstract
- The hybrid ionic conduction of ceria-carbonate composite is an interesting field that has attracted plenty attention in the past decade. However, it has not reached universal agreement among the researcher. Novel characterization method is still needed to reveal this complex system and benefit the future advanced materials design and development. In this work, the electrolysis operation is employed to investigate the possible ionic conduction behavior of ceria-carbonate. The other goal is to optimize the processing technology to maximum the kinetics rate for efficient hydrogen production. An impressive current density of 1.2 A cm-2 has been achieved at 600 °C under voltage of 1.6 V at the absolute humidity of 3% and oxygen ionic operational mode.
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| 5. |
- Fan, Liangdong, et al.
(författare)
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Low temperature ceramic fuel cells using all nano-composite materials
- 2011
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Ingår i: EFC 2011 - Proceedings of the 4th European Fuel Cell Piero Lunghi Conference and Exhibition. - 9788882862541 ; , s. 175-176
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Konferensbidrag (refereegranskat)abstract
- Nano-structural components have attracted increasing attention in intermediate/low temperature ceramic fuel cell. We reported here a ceramic fuel cell with a configuration of (Ni/Fe)-NSDC/NSDC/LiNiZnO-NSDC by all nano-composite materials and operated at low temperature range of 500-600°C. The prepared nanocomposite materials are characterized by X-ray diffraction (XRD), Emission scanning electron microscopy (SEM) and Transmission electron microscopy (TEM). Electrochemical performances were studied by current -Voltage, power density characteristics and Ac impedance spectroscopy. The short term stability of fuel cell was also investigated in 100 min. The high fuel cell performance and reasonable stability demonstrated that the all nanocomposite fuel cell concept is feasible and may have great potential in future study.
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| 6. |
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| 7. |
- Kristan, Matej, et al.
(författare)
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The Visual Object Tracking VOT2016 Challenge Results
- 2016
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Ingår i: COMPUTER VISION - ECCV 2016 WORKSHOPS, PT II. - Cham : SPRINGER INT PUBLISHING AG. - 9783319488813 - 9783319488806 ; , s. 777-823
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Konferensbidrag (refereegranskat)abstract
- The Visual Object Tracking challenge VOT2016 aims at comparing short-term single-object visual trackers that do not apply pre-learned models of object appearance. Results of 70 trackers are presented, with a large number of trackers being published at major computer vision conferences and journals in the recent years. The number of tested state-of-the-art trackers makes the VOT 2016 the largest and most challenging benchmark on short-term tracking to date. For each participating tracker, a short description is provided in the Appendix. The VOT2016 goes beyond its predecessors by (i) introducing a new semi-automatic ground truth bounding box annotation methodology and (ii) extending the evaluation system with the no-reset experiment.
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| 8. |
- Lima, Raquel B., et al.
(författare)
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Direct lignin fuel cell for power generation
- 2011
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Ingår i: 16th International Symposium on Wood, Fiber and Pulping Chemistry. ; , s. 257-262
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Konferensbidrag (refereegranskat)abstract
- Lignin, the second most abundant component after cellulose in biomass, has been examined in this study as a fuel for a direct conversion into electricity using direct carbon fuel cell (DCFC). Two different types of industrial lignins were investigated: lignosulphonate (LS) and kraft lignin (KL), either directly in their commercial forms, after their blending with commercial active carbon (AC) or after alternation of their structures by a pH adjustment to pH 10. It has been found that the open circuit voltage (OCV) of the DCFC could reach around 0.7 V in most of the trials. Addition of active carbon increased the maximum current density from 43∼57 to 85∼101 mA/cm 2. The pH adjustment not only increased the maximum current density but also reduced the differences between the two types of lignins, resulting in an OCV of 0.680-0.699 V and a maximum current density of 74∼79 mA/cm 2 from both lignins. Typical power density was 12 (for KL +AC) and 24 mW cm -2 (for LS +AC). It has been concluded that a direct lignin fuel cell is feasible and the lignin hydrophilicity is critical for the cell performance.
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| 9. |
- Singh, M., et al.
(författare)
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Single component low-temperature fuel cell with alcohol fuel
- 2011
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Ingår i: EFC 2011 - Proceedings of the 4th European Fuel Cell Piero Lunghi Conference and Exhibition. - 9788882862541 ; , s. 211-212
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Konferensbidrag (refereegranskat)abstract
- Following our previous study, we report here novel preparation of the low temperature single component fuel cell and related materials and performance using methanol as fuel for the first time. A maximum power density of 206 mW/cm2 was achieved at 550 °C, indicating the feasibility of direct liquid fed single component fuel cells.
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| 10. |
- Wang, Bin, et al.
(författare)
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Analysis of Efficient TDMA Schedules via the Fat-Tree Network with Real-Time Many-to-Many Communication
- 2006
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Ingår i: Proceedings of the IASTED International Conference on Parallel and Distributed Computing and Networks. - Anaheim, CA : ACTA Press. - 088986568X ; , s. 192-197
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Konferensbidrag (refereegranskat)abstract
- The Real-Time Many-to-Many (RTM2M) communication pattern is widely used in many parallel and distributed computing applications with time constraints such as radar signal processing. In this paper, we propose how to use TDMA (Time Division Multiple Access) to achieve efficient support for RTM2M over the fat-tree network built up on 4×2 switches (four children and two parents). Moreover, we have compared four different TDMA schedules in terms of the end-to-end delay and network utilization [1] and presented two of them in detail hereby. The general formulas of the end-to-end delay of two of the most interesting schedules are derived and simulations are represented to both verify the formulas and provide support for the conclusion from the viewpoint of the network utilization.
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