s Western Yunnan is located at the boundary of collision or underthrusting zone of Eurasian plate and is influenced by many times tectonic movements. With very complex geological environment and tectonic background, i...s Western Yunnan is located at the boundary of collision or underthrusting zone of Eurasian plate and is influenced by many times tectonic movements. With very complex geological environment and tectonic background, it is one of the seismically active areas. In the paper, the teleseismic records were selected from 16 national, local and mo-bile stations, including 4 very-wide-band mobile stations of PASSCAL. And nearly 2 000 receiver functions were extracted. Two measuring lines are 650 km and 450 km, respectively and across some major tectonic units in Western Yunnan. It is indicated that Nujiang might be a seam characterized by underthrusting. The western and eastern boundaries of Sichuan-Yunnan rhombus block, i.e., Honghe and Xiaojiang faults, might be an erection seam or collision belt. Panxi tectonic zone still has the characteristics of continental rift valley, that is, the surface is hollow and the upper mantle is upwarping. The tectonic situation in Western Yunnan is of certain regulation with the interlacing distribution of orogenic zone and seam. The crustal thickness decreases gradually from the north to the south and the S wave velocity is globally lower here.展开更多
目的报道1例蛋白C和蛋白S缺陷症致脑静脉血栓形成病例,总结临床诊疗思路。方法与结果男性患者,27岁,以头痛发病,平卧位加重、站立位稍缓解。影像学检查提示右侧横窦、乙状窦、窦汇血栓形成;实验室检查蛋白C和蛋白S活性降低(49%和51%),...目的报道1例蛋白C和蛋白S缺陷症致脑静脉血栓形成病例,总结临床诊疗思路。方法与结果男性患者,27岁,以头痛发病,平卧位加重、站立位稍缓解。影像学检查提示右侧横窦、乙状窦、窦汇血栓形成;实验室检查蛋白C和蛋白S活性降低(49%和51%),脑脊液压力>330 mm H_(2)O;基因检测提示PROC基因移码突变[c.574_577del(p.Val192Serfs*5)]及PROS1基因错义突变[c.1915T>G(p.Cys639Gly)和c.301C>T(p.Arg101Cys)]。予以低分子量肝素序贯新型口服抗凝药抗凝治疗以及降低颅内压、营养神经和镇痛治疗后,头痛症状缓解。出院后4个月头痛无复发,复查脑脊液压力降至正常(135 mm H_(2)O),蛋白C和蛋白S活性升至53%和54.10%(仍低于正常值范围)。结论蛋白C和(或)蛋白S缺乏是脑静脉血栓形成的重要病因,新型口服抗凝药可有效改善静脉回流障碍并避免华法林相关凝血机制紊乱,是优选治疗方案。临床应对青年患者行凝血蛋白活性检测及遗传学分析,以指导精准抗凝治疗。展开更多
Command, control, communication, computing, intel- ligence, surveillance and reconnaissance （C^4ISR） in information age is a complex system whose structure always changes ac- tively or passively during the warfare. ...Command, control, communication, computing, intel- ligence, surveillance and reconnaissance （C^4ISR） in information age is a complex system whose structure always changes ac- tively or passively during the warfare. Therefore, it is important to optimize the structure, especially in ambiguous and quick-tempo modern warfare. This paper proposes an adaptive evolvement mechanism for the C^4ISR structure to survive the changeable warfare. Firstly, the information age C^4ISR structure is defined and modeled based on the complex network theory. Secondly, taking the observe, orient, decide and act （OODA） model into consideration, four kinds of loops in the C^4ISR structure are pro- posed and their coefficient of networked effects （CNE） is further defined. Then, the adaptive evolvement mechanisms of the four kinds of loops are presented respectively. Finally, taking the joint air-defense C^4ISR as an example, simulation experiments are im- plemented, which validate the evolvement mechanism and show that the information age C41SR structure has some characteristics of small-world network and scale-free network.展开更多
Based on the biological prototype characteristics of shark’s gill jet orifice,the flexible driving characteristics of ionic exchange polymer metal composites(IPMC)artificial muscle materials and the use of sleeve fle...Based on the biological prototype characteristics of shark’s gill jet orifice,the flexible driving characteristics of ionic exchange polymer metal composites(IPMC)artificial muscle materials and the use of sleeve flexible connector,the IPMC linear driving unit simulation model is built and the IPMC material-driving dynamic control structure of bionic gill unit is developed.Meanwhile,through the stress analysis of bionic gill plate and the motion simulation of bionic gill unit,it is verified that various dynamic control and active control of the jet orifice under the condition of different mainstream field velocities will be taken by using IPMC material-driving.Moreover,the large-deflection deformation of bionic gill plate under dynamic pressure and the comparative analysis with that of a rigid gill plate is studied,leading to the achievement of approximate revised modifier from real value to theoretical value of the displacement control of IPMC.展开更多
基金State Key Basic Research Development and Programming Project of China (G1998040700).
文摘s Western Yunnan is located at the boundary of collision or underthrusting zone of Eurasian plate and is influenced by many times tectonic movements. With very complex geological environment and tectonic background, it is one of the seismically active areas. In the paper, the teleseismic records were selected from 16 national, local and mo-bile stations, including 4 very-wide-band mobile stations of PASSCAL. And nearly 2 000 receiver functions were extracted. Two measuring lines are 650 km and 450 km, respectively and across some major tectonic units in Western Yunnan. It is indicated that Nujiang might be a seam characterized by underthrusting. The western and eastern boundaries of Sichuan-Yunnan rhombus block, i.e., Honghe and Xiaojiang faults, might be an erection seam or collision belt. Panxi tectonic zone still has the characteristics of continental rift valley, that is, the surface is hollow and the upper mantle is upwarping. The tectonic situation in Western Yunnan is of certain regulation with the interlacing distribution of orogenic zone and seam. The crustal thickness decreases gradually from the north to the south and the S wave velocity is globally lower here.
文摘目的报道1例蛋白C和蛋白S缺陷症致脑静脉血栓形成病例,总结临床诊疗思路。方法与结果男性患者,27岁,以头痛发病,平卧位加重、站立位稍缓解。影像学检查提示右侧横窦、乙状窦、窦汇血栓形成;实验室检查蛋白C和蛋白S活性降低(49%和51%),脑脊液压力>330 mm H_(2)O;基因检测提示PROC基因移码突变[c.574_577del(p.Val192Serfs*5)]及PROS1基因错义突变[c.1915T>G(p.Cys639Gly)和c.301C>T(p.Arg101Cys)]。予以低分子量肝素序贯新型口服抗凝药抗凝治疗以及降低颅内压、营养神经和镇痛治疗后,头痛症状缓解。出院后4个月头痛无复发,复查脑脊液压力降至正常(135 mm H_(2)O),蛋白C和蛋白S活性升至53%和54.10%(仍低于正常值范围)。结论蛋白C和(或)蛋白S缺乏是脑静脉血栓形成的重要病因,新型口服抗凝药可有效改善静脉回流障碍并避免华法林相关凝血机制紊乱,是优选治疗方案。临床应对青年患者行凝血蛋白活性检测及遗传学分析,以指导精准抗凝治疗。
基金supported by the National Defense Basic Research Program of China and National Defense Pre-Research Foundation of China
文摘Command, control, communication, computing, intel- ligence, surveillance and reconnaissance （C^4ISR） in information age is a complex system whose structure always changes ac- tively or passively during the warfare. Therefore, it is important to optimize the structure, especially in ambiguous and quick-tempo modern warfare. This paper proposes an adaptive evolvement mechanism for the C^4ISR structure to survive the changeable warfare. Firstly, the information age C^4ISR structure is defined and modeled based on the complex network theory. Secondly, taking the observe, orient, decide and act （OODA） model into consideration, four kinds of loops in the C^4ISR structure are pro- posed and their coefficient of networked effects （CNE） is further defined. Then, the adaptive evolvement mechanisms of the four kinds of loops are presented respectively. Finally, taking the joint air-defense C^4ISR as an example, simulation experiments are im- plemented, which validate the evolvement mechanism and show that the information age C41SR structure has some characteristics of small-world network and scale-free network.
基金Project(51275102)supported by the National Natural Science Foundation of ChinaProject(HEUCF140713)supported by the Fundamental Research Funds for the Central Universities,China
文摘Based on the biological prototype characteristics of shark’s gill jet orifice,the flexible driving characteristics of ionic exchange polymer metal composites(IPMC)artificial muscle materials and the use of sleeve flexible connector,the IPMC linear driving unit simulation model is built and the IPMC material-driving dynamic control structure of bionic gill unit is developed.Meanwhile,through the stress analysis of bionic gill plate and the motion simulation of bionic gill unit,it is verified that various dynamic control and active control of the jet orifice under the condition of different mainstream field velocities will be taken by using IPMC material-driving.Moreover,the large-deflection deformation of bionic gill plate under dynamic pressure and the comparative analysis with that of a rigid gill plate is studied,leading to the achievement of approximate revised modifier from real value to theoretical value of the displacement control of IPMC.
