4篇
您的检索式：作者名="Li Songchen"
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| 1 | A set of miRNAs from Brassica napus in response to sulphate deficiency and cadmium stress显示文摘 | Si QiHuang An LingXiang Li LingChe SongChen HuiLi Jian BoSong Zhi MinYang | 2010 | Plant Biotechnology Journal2010，，8： | 1 |
| 2 | Cointegration research ofageneral vertor ARFIMA model based on independ- ent components analysis 显示文摘 | Li Songchen Zhang Shiying | 2007 | (5): 40-452007，，5： | 1 |
| 3 | Exploring 2D projection and 3D spatial information for aircraft 6D pose显示文摘The 6D pose estimation is important for the safe take-off and landing of the aircraft using a single RGB image. Due to the large scene and large depth, the exiting pose estimation methods have unstratified performance on the accuracy. To achieve precise 6D pose estimation of the aircraft, an end-to-end method using an RGB image is proposed. In the proposed method, the2D and 3D information of the keypoints of the aircraft is used as the intermediate supervision,and 6D pose information of the aircraft in this intermediate information will be explored. Specifically, an off-the-shelf object detector is utilized to detect the Region of the Interest(Ro I) of the aircraft to eliminate background distractions. The 2D projection and 3D spatial information of the pre-designed keypoints of the aircraft is predicted by the keypoint coordinate estimator(Kp Net).The proposed method is trained in an end-to-end fashion. In addition, to deal with the lack of the related datasets, this paper builds the Aircraft 6D Pose dataset to train and test, which captures the take-off and landing process of three types of aircraft from 11 views. Compared with the latest Wide-Depth-Range method on this dataset, our proposed method improves the average 3D distance of model points metric(ADD) and 5° and 5 m metric by 86.8% and 30.1%, respectively. Furthermore, the proposed method gets 9.30 ms, 61.0% faster than YOLO6D with 23.86 ms. | Daoyong FU Songchen HAN BinBin LIANG Xinyang YUAN Wei LI | 2023 | Chinese Journal of Aeronautics2023，36，8： | 0 |
| 4 | Numerical Simulation of U-Shaped Metal Rings in a Wind-Sand Environment显示文摘The interaction of U-shaped rings used for power transmission hardware with a wind-sand field is simulated numerically.A standard kturbulence model is used in synergy with an Eulerian-Lagrangian approach.The results show that the wind pressure on the windward side of the U-shaped ring is the highest,a negative pressure zone appears on both sides of the U-shaped ring,while a Kármán Vortex Street is created on its leeward side.There are three possible regimes of motion for the sand grains in the wind field.Sand grains with size below 0.125 mm can follow the airflow directly into the contact area of two U-shaped rings.When the sand size is about 0.1 mm,the number of sand grains that are blown into the contact area attains a maximum.Through the simulation of U-shaped rings in the wind-sand field,the dynamics of such processes are explained in detail,thereby providing relevant information for the subsequent protection and design of connecting hardware used for power transmission. | Songchen Wang Xinmei Li Cheng Chai Gen Wang Caibin Lu | 2021 | Fluid Dynamics & Materials Processing2021，17，3： | 0 |
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