Extended Quark Potential Model from Random Phase Approximation

The quark potential model is extended to include the sea quark excitation using the random phase approximation (RPA). The effective quark interaction preserves the important Quantum Chromodynamics (QCD) properties -- chiral symmetry and confinement simultaneously. A primary qualitive analysis shows that the $\pi$ meson as a well-known typical Goldstone boson and the other mesons made up of valence $q\bar{q}$ quark pair such as the $\rho$ meson can also be described in this extended quark potential model

Planar Object Tracking in the Wild: A Benchmark

Planar object tracking is an actively studied problem in vision-based robotic applications. While several benchmarks have been constructed for evaluating state-of-the-art algorithms, there is a lack of video sequences captured in the wild rather than in constrained laboratory environment. In this paper, we present a carefully designed planar object tracking benchmark containing 210 videos of 30 planar objects sampled in the natural environment. In particular, for each object, we shoot seven videos involving various challenging factors, namely scale change, rotation, perspective distortion, motion blur, occlusion, out-of-view, and unconstrained. The ground truth is carefully annotated semi-manually to ensure the quality. Moreover, eleven state-of-the-art algorithms are evaluated on the benchmark using two evaluation metrics, with detailed analysis provided for the evaluation results. We expect the proposed benchmark to benefit future studies on planar object tracking.Comment: Accepted by ICRA 201

Genus Gelastorhinus Brunner-Wattenwyl (Orthoptera: Acridoidea) in China with description of a new species

A new species of the genus Gelastorhinus is described from Liaoning, China. The new species closely resembles Gelastorhinus filatus (Walker, 1870). In addition, an identification key for the Chinese species of Gelastorhinus is presented

Review and key of East Palaearctic species of the genus Podismopsis Zubovsky (Orthoptera: Acridoidea) with description of a new species from China

In this paper, a list and key of all East Palaearctic Podismopsis species are presented. In addition, Podismopsis squamopennis sp. n. is described from the Small Northern Lake of Heilongjiang province in China. It mostly resembles P. gynaemorpha Ikonnov