This paper proposes an intelligent low-thrust orbit phasing control method for multiple spacecraft by simultaneously considering fuel optimization and collision avoidance. Firstly,the minimum-fuel orbit phasing contro...This paper proposes an intelligent low-thrust orbit phasing control method for multiple spacecraft by simultaneously considering fuel optimization and collision avoidance. Firstly,the minimum-fuel orbit phasing control database is generated by the indirect method associated with the homotopy technique. Then,a deep network representing the minimum-fuel solution is trained. To avoid collision for multiple spacecraft,an artificial potential function is introduced in the collision-avoidance controller. Finally,an intelligent orbit phasing control method by combining the minimum-fuel neural network controller and the collision-avoidance controller is proposed. Numerical results show that the proposed intelligent orbit phasing control is valid for the multi-satellite constellation initialization without collision.展开更多
Objective To observe the clinical efficacy of tuina on the acupoints for infantile hypermyotonia. Methods Tuina on the acupoints was given to 80 cases of infantile hypermyotonia. Acupoint selection： Jianyu （肩髃LI 1...Objective To observe the clinical efficacy of tuina on the acupoints for infantile hypermyotonia. Methods Tuina on the acupoints was given to 80 cases of infantile hypermyotonia. Acupoint selection： Jianyu （肩髃LI 15）, Quchi （曲池 LI 11）, Waiguan （外关 TE 5） and Hegu （合谷LI 4） were adoted on the upper limbs, and Fengshi （风市GB 31）, Zusanli （足三里 ST 36）, Xuanzhong （悬钟GB 39）, Taixi （太溪 El 3）, T^ichang （太冲 LR 3）, Jiexi （解溪 ST 41） and Weizhong （委中 BL 40） were adopted on the lower limbs. The acupoints were pressed and rubbed rhythmically with the fingerprint surface of thumb of the doctor for 15-20 min. Then the foot-taiyang bladder meridian was rubbed and pushed, and the therapy of pinching along the spine was applied. The treatment was conducted for once a day, and treatment for 20 days was considered as one course. The muscular tension of the infantile patients was examined after each course of treatment, when the muscular tension returned to level O, the treatment can be ceased, otherwise, the treatment should be continued. Results After one course of treatment, the muscular tension of 12 infantile patients returned to level 0, accounting for 15.0% （12/80）, after two courses of treatment, the muscular tension of 56 infantile patients returned to level 0, accounting for 70.0% （56/80）, after three courses of treatment, the muscular tension of 10 infantile patients returned to level O, accounting for 12.5% （10/80）, the muscular tension of 2 infantile patients returned to level 0 after more than three courses of treatment, accounting for 2.5% （2/80）. Conclusion Tuina on the acupoints is an effective therapy for infantile hypermyotonia.展开更多
基金supported in part by the National Natural Science Foundation of China (No. 11772104)in part by the Key Research and Development Plan of Heilongjiang Province(No. GZ20210120)in part by the Fundamental Research Funds for the Central Universities。
文摘This paper proposes an intelligent low-thrust orbit phasing control method for multiple spacecraft by simultaneously considering fuel optimization and collision avoidance. Firstly,the minimum-fuel orbit phasing control database is generated by the indirect method associated with the homotopy technique. Then,a deep network representing the minimum-fuel solution is trained. To avoid collision for multiple spacecraft,an artificial potential function is introduced in the collision-avoidance controller. Finally,an intelligent orbit phasing control method by combining the minimum-fuel neural network controller and the collision-avoidance controller is proposed. Numerical results show that the proposed intelligent orbit phasing control is valid for the multi-satellite constellation initialization without collision.
文摘Objective To observe the clinical efficacy of tuina on the acupoints for infantile hypermyotonia. Methods Tuina on the acupoints was given to 80 cases of infantile hypermyotonia. Acupoint selection： Jianyu （肩髃LI 15）, Quchi （曲池 LI 11）, Waiguan （外关 TE 5） and Hegu （合谷LI 4） were adoted on the upper limbs, and Fengshi （风市GB 31）, Zusanli （足三里 ST 36）, Xuanzhong （悬钟GB 39）, Taixi （太溪 El 3）, T^ichang （太冲 LR 3）, Jiexi （解溪 ST 41） and Weizhong （委中 BL 40） were adopted on the lower limbs. The acupoints were pressed and rubbed rhythmically with the fingerprint surface of thumb of the doctor for 15-20 min. Then the foot-taiyang bladder meridian was rubbed and pushed, and the therapy of pinching along the spine was applied. The treatment was conducted for once a day, and treatment for 20 days was considered as one course. The muscular tension of the infantile patients was examined after each course of treatment, when the muscular tension returned to level O, the treatment can be ceased, otherwise, the treatment should be continued. Results After one course of treatment, the muscular tension of 12 infantile patients returned to level 0, accounting for 15.0% （12/80）, after two courses of treatment, the muscular tension of 56 infantile patients returned to level 0, accounting for 70.0% （56/80）, after three courses of treatment, the muscular tension of 10 infantile patients returned to level O, accounting for 12.5% （10/80）, the muscular tension of 2 infantile patients returned to level 0 after more than three courses of treatment, accounting for 2.5% （2/80）. Conclusion Tuina on the acupoints is an effective therapy for infantile hypermyotonia.
