Short-term traffic forecast is one of the essential issues in intelligent transportation system. Accurate forecast result enables commuters make appropriate travel modes, travel routes, and departure time, which is meaningful in traffic management. To promote the forecast accuracy, a feasible way is to develop a more effective approach for traffic data analysis. The availability of abundant traffic data and computation power emerge in recent years, which motivates us to improve the accuracy of short-term traffic forecast via deep learning approaches. A novel traffic forecast model based on long short-term memory (LSTM) network is proposed. Different from conventional forecast models, the proposed LSTM network considers temporal-spatial correlation in traffic system via a two-dimensional network which is composed of many memory units. A comparison with other representative forecast models validates that the proposed LSTM network can achieve a better performance.

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A Li3N protection layer is fabricated on the surface of a Li anode by an in situ method to suppress the shuttle effect on the basis of anode protection. The discharge capacity is retained at 773 mA h g(-1) after 500 cycles with an average coulombic efficiency of 92.3% in the electrolyte without LiNO3, while the sulfur loading of the simple sulfur cathode was 2.5-3 mg cm(-2).

High-spin states in 139 Pm are investigated via the 116 Cd( 27 Al, 4n) 139 Pm fusion-evaporation reaction at a beam energy of 120 MeV. The previously reported level scheme has been modified because of identifications of some linking and doublet transitions. The revised yrast πh 11/2 band obviously undergoes πh 11/2 → π (h 11/2 ) 3 → π (h 11/2 ) 3 ⊗ν(h 11/2 ) −2 band crossings athω = 0.45 and 0.39 MeV. Two negative-parity dipole bands have been assigned as πh 11/2 ⊗ν(h 11/2 ) −2 and πh 11/2 ⊗ν(h 11/2 ) −4 configurations, respectively, and can be considered as examples of magnetic rotational bands.

This work provides a theory of the general structure of mixed-spin fractional quantum Hall states, which are relevant at low magnetic fields. This, in particular, leads to a microscopic description of the experimentally observed mixed-spin states at v -j, j, and j. Antiparallel-flux-attachment transformation of the composite fermion theory plays an important role in explaining the mixed-spin states in the filling factor range \ > v > j.PACS numbers: 73.40.Hm, 73.20.Dx, 73.50.JtThe fractional quantum Hall state is characterized by quantized Hall resistance and vanishing longitudinal resistance [1], In the limit of infinitely large magnetic field, B, the Zeeman splitting is infinitely large, the spin degrees of freedom are frozen out, and electrons can be taken to be spinless. An intuitively simple and microscopically accurate understanding of the fractional quantum Hall effect state in this limit is provided by the composite fermion (CF) theory [21. This theory relates, through a flux-attachment transformation, the complicated problem of highly correlated electrons in the fractional quantum Hall effect (FQHE) regime to the simple problem of weakly interacting electrons in the integer QHE (IQHE) regime. In this paper, we use this approach to investigate odd-denominator FQHE in the low-field limit. It was realized by Halperin [3] that Zeeman splitting is quite small in GaAs (approximately ^ of the cyclotron energy), so, at relatively low B, it may be possible that the ground state of interacting electrons is not fully spin polarized. There is good experimental evidence that the FQHE states at v™ j, f, y, and f are not fully spin polarized at low magnetic fields. A transition from the high-/? maximally polarized FQHE states to mixed-spin states has been observed at these filling factors as the Zeeman energy is lowered in several beautiful experiments [4-7].There is no satisfactory understanding of the general structure of the FQHE states in the low-field limit. Theoretical studies investigating FQHE in the low-field limit set the Zeeman splitting to zero, while still keeping the Landau level (LL) separation large, so that only the lowest LL is retained in the calculations. This will be referred to as the vanishing-Zeeman-splitting (VZS) limit. There have been several exact diagonalization studies in the VZS limit [8,9]. The calculations of Ref.[8] show that, in this limit, the incompressible ground states at filling factors v""2/(2/i + l) are spin singlet in the thermodynamic limit, while those at v*=l/(2n + 1) are maximally polarized. The state at v =-f was found to be partially polarized [9]. The fully polarized states at v^l/ (2n +1) are, of course, the celebrated Laughlin states [10]. There is also a good microscopic understanding for filling factors v^l/iAn + 1) " j, \,. . . (and their par-

Oxalate route was applied to synthesize mesoporous manganese oxides and their catalytic activity for VOCs’ oxidation was significantly promoted.

The progress in the research work and real applications of sodium‐sulfur (NAS) battery in large scale energy storage is introduced. The key materials and interfaces of the battery, particularly the role of Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS), are systematically reviewed. As the most important and difficult part, the high‐quality beta‐ alumina ceramic electrolyte tubes are prepared by a low‐cost solid state reaction process; their sealing performance and interfacial behavior with molten sodium and sulfur electrodes could be substantially improved by glass ceramic type sealants and surface modification, respectively. Combination of carbon and additives like SiO2 with different wetting behaviors for sulfur and the discharge product sulfides is shown to be significant in improving the electrochemical performances of NAS battery. Conductive ceramic coatings are developed as anti‐corrosion media of the current collector of sulfur electrode; this is identified as an effective route to protect the metal parts.