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| 1 | Simulation model of self-organizing pedestrian movement considering following behavior显示文摘在本文中一种新的力学模型被引入到社会力模型中,用来仿真相向行人流中的跟随行为。这种跟随行为指的是行人通过接近同向行人以避免与反向行人冲突的行为。新的力学模型类似于一种引力模型,在建模过程中考虑了行人的视野范围、自身的运动状态、被跟随行人的运动状态等因素。我们利用新的力学模型对相向行人流进行了仿真,研究了跟随行为对渠化现象、行人间冲突以及双向通道通行效率的影响。仿真结果表明:跟随行为能促进渠化现象形成,并能起到缓解相向行人流拥堵的作用;跟随行为具有降低相向行人流冲突次数的作用,这种作用在入口流量较低时并不明显,但随着行人流量的升高而增强。跟随行为能够提高双向通道的通行效率,并且跟随行为的强度参数越大通道的通行效率越高。 | Zhilu YUAN Hongfei JIA Mingjun LIAO Linfeng ZHANG Yixiong FENG Guangdong TIAN | 2017 | Frontiers of Information Technology & Electronic Engineering2017，18，8： | 7 |
| 2 | Optimal Control Virtual Inertia of Optical Storage Microgrid Based on Improved Sailfish Algorithm显示文摘The optical storage microgrid system composed of power electronic converters is a small inertia system.Load switching and power supply intermittent will affect the stability of the direct current(DC)bus voltage.Aiming at this problem,a virtual inertia optimal control strategy applied to optical storage microgrid is proposed.Firstly,a small signal model of the system is established to theoretically analyze the influence of virtual inertia and damping coefficient on DC bus voltage and to obtain the constraint range of virtual inertia and damping coefficient;Secondly,aiming at the defect that the Sailfish optimization algorithm is easy to premature maturity,a Sailfish optimization algorithm based on the leak-proof net and the cross-mutation propagation mechanism is proposed;Finally,the virtual inertia and damping coefficient of the system are optimized by the improved Sailfish algorithm to obtain the best control parameters.The simulation results in Matlab/Simulink show that the virtual inertia control optimized by the improved Sailfish algorithm improves the system inertia as well as the dynamic response and robustness of the DC bus voltage. | LIAO Hongfei ZENG Guohui HUANG Bo MA Chi CHEN Gong ZHAO Jinbin | 2022 | Wuhan University Journal of Natural Sciences2022，27，3： | 1 |
| 3 | Calculation model used for recipe revision in computer color matching 显示文摘 | Zeng Hua Liao Ningfang Yu Hongfei | 1999 | Optical Engineering1999，38，12： | 1 |
| 4 | Gamma-knife for treating pituitary adenomas in 501 cases: Retrospective case analysis显示文摘BACKGROUND: Gamma-knife is characterized by low risk and low death rate, without trauma, bleeding or infection. MRI has replaced CT as a method of location, and provides a good choice for treating pituitary tumors. OBJECTIVE: To analyze the effectiveness and complications of 501 cases with pituitary adenoma by using gamma-knife retrospectively. DESIGN: Case-analysis. SETTING: Gamma-knife Center, the 363 Hospital of Chinese PLA. PARTICIPANTS: A total of 501 cases were selected from Gamma-knife Center, the 363 Hospital of Chinese PLA from January 1997 to December 2002. All patients were certainly diagnosed with CT and MRI scanning. There were 186 males and 315 females. Their ages ranged from 15 to 84 years with the mean age of 39 years. All patients provided confirmed consent. METHODS: All 501 cases with pituitary adenomas were treated by gamma-knife or combined with operations. The average iso-dose curve was 50% (30%–65%), peri-dose was 14 Gy and the average target number was 5.17. ① At 35 months after treatment, patients received follow-up including clinical symptoms, imaging symptoms and endocrine symptoms. ② Patients who received second gamma-knife treatment were analyzed and their complications were observed after operation. MAIN OUTCOME MEASURES: ① Follow-up results of clinical symptoms, image and endocrine indexes; ② second gamma-knife treatment; ③ postoperative complications. RESULTS: Among 501 accepted patients, 275 cases were involved in the follow up of clinical symptoms, 154 in image symptoms and 98 in endocrine symptoms. ① Follow-up results of clinical symptoms, image and endocrine indexes: Follow up of clinical symptoms demonstrated that clinical symptoms of 169 cases were relieved, of 68 disappeared, and of 38 deteriorated. Follow-up of image symptoms indicated that pituitary tumor of 25 cases disappeared, of 84 shortened, of 42 not changed, and of 3 enlarged. Follow-up of endocrine symptoms suggested that endocrine of 50 cases was abnormal, of 29 recovery to normal value, and of 19 not changed obviously. ② Second gamma-knife treatment: At 6–24 months after gamma-knife treatment, 15 patients with pituitary tumor received second gamma-knife treatment; especially, one patient received for the three times. The conditions in details were recorded as follows: The peri-dose for the first treatment ranged from 8 to 12 Gy; in addition, that for the second one ranged from 6 to 12 Gy. ③ Postoperative complications: The complications were as follow: hypopituitarism occurred in 2 patients (0.7%); tumor apoplexy in 2 patients (0.7%); weakened eyesight in 5 patients (1.8%); 3 of which recovered with dehydration and hormone treatment; 2 patients received tumor resection and optical nerve decompression operation with dehydration and hormone treatment ineffectively. CONCLUSION: Gamma-knife is effective and safe for pituitary adenoma. | Jin Lei Hongfei Liao Yi Tang Gaofeng Wu | 2007 | Neural Regeneration Research2007，2，7： | 1 |
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