目的:探讨高髋关节中心技术全髋关节置换术(total hip arthroplasty,THA)治疗CroweⅡ、Ⅲ型发育性髋关节发育不良(developmental dysplasia of hip,DDH)并重度髋关节炎(hip osteoarthritis,HOA)的临床疗效。方法:2018年1月至2020年1月收...目的:探讨高髋关节中心技术全髋关节置换术(total hip arthroplasty,THA)治疗CroweⅡ、Ⅲ型发育性髋关节发育不良(developmental dysplasia of hip,DDH)并重度髋关节炎(hip osteoarthritis,HOA)的临床疗效。方法:2018年1月至2020年1月收治CroweⅡ、Ⅲ型DDH并重度HOA患者74例,37例行解剖型髋关节中心重建为对照组,其中男7例,女30例,年龄42~65(58.40±4.98)岁,身体质量指数(body mass index,BMI)18~29(23.02±2.21)kg·m^(-2)。37例行高髋关节中心技术重建为研究组,其中男5例,女32例,年龄41~65(57.31±5.42)岁,BMI 18~29(23.14±2.07)kg·m^(-2)。患者术前表现髋关节疼痛、功能及关节活动度受限、步态不稳等。比较两组围术期指标,术前及术后3、6、12个月分别评估患者髋关节功能、平衡功能及步态情况,术前及术后12个月测量双下肢长度差、旋转中心水平距离、旋转中心垂直距离、股骨偏心距。结果:术后随访12个月,研究组失访1例,对照组失访2例。研究组手术时间短于对照组,术中出血量少于对照组(P<0.05)。术后3、6个月研究组Harris评分、Berg平衡量表(Berg balance scale,BBS)评分、步速、步频、单步长大于对照组(P<0.05),术后12个月以上指标组间比较,差异无统计学意义(P>0.05);术后12个月,研究组旋转中心垂直距离大于对照组(P<0.05),两组双下肢长度差、旋转中心水平距离、股骨偏心距比较,差异无统计学意义(P>0.05);两组均未出现并发症。结论:两种髋关节中心重建方式应用于DDH并重度HOA患者THA远期效果相当,安全性良好,且高髋关节中心技术重建可缩短手术时间,减少术中出血量,同时在早期恢复患者髋关节功能、平衡功能及步行功能方面具有一定优势。展开更多
The phenomena of GS in a drive-response system have been studied. Several kinds of GS are found： the driver-induced GS, the responser-induced GS, and the intermediate GS. The mechanism generating these types of GS is...The phenomena of GS in a drive-response system have been studied. Several kinds of GS are found： the driver-induced GS, the responser-induced GS, and the intermediate GS. The mechanism generating these types of GS is given and the roles played by response and drive dynamics in realizing different GS states are discussed.展开更多
The spontaneous drift of the spiral wave in a finite domain in the complex Ginzburg Landau equation is investigated numerically. By using the interactions between the spiral wave and its images, we propose a phenomeno...The spontaneous drift of the spiral wave in a finite domain in the complex Ginzburg Landau equation is investigated numerically. By using the interactions between the spiral wave and its images, we propose a phenomenological theory to explain the observations.展开更多
We investigate the Turing-like wave instability of the uniform oscillator in oscillatory mediums using theoretical and flumerical methods. A propagating wave pattern originated at the corner of the system emerges when...We investigate the Turing-like wave instability of the uniform oscillator in oscillatory mediums using theoretical and flumerical methods. A propagating wave pattern originated at the corner of the system emerges when the uniform oscillator becomes unstable via Thring-like wave instability. Bifurcations from periodically propagated wave patterns to quasi-periodically propagated wave patterns, then to spatiotemporal chaos occur, as the system size increases from the instability threshold of the uniform oscillator.展开更多
Based on the recently proposed concepts of asymptotic behaviors,i.e.pure cooperator,pure defector and fluctuating strategy,we explore thoroughly the dynamical organization of the strategy pattern in evolutionary priso...Based on the recently proposed concepts of asymptotic behaviors,i.e.pure cooperator,pure defector and fluctuating strategy,we explore thoroughly the dynamical organization of the strategy pattern in evolutionary prisoner's dilemma game on scale-free networks.展开更多
We investigate the evolutionary Prisoner＇s dilemma game on the simplest spatial networks constructed as geometrical graphs. The optimal cooperation enhancement against the topology randomness is found. It is proposed...We investigate the evolutionary Prisoner＇s dilemma game on the simplest spatial networks constructed as geometrical graphs. The optimal cooperation enhancement against the topology randomness is found. It is proposed that the optimal behavior of the cooperation results from the competition between individuals with high degrees and with low degrees： the former assists the formation of cooperator clusters and the latter tends to prevent the formation of such dusters.展开更多
A generalization of the Kuramoto model in which oscillators are coupled to the mean field with random signs is investigated in this work. We focus on a situation in which the natural frequencies of oscillators follow ...A generalization of the Kuramoto model in which oscillators are coupled to the mean field with random signs is investigated in this work. We focus on a situation in which the natural frequencies of oscillators follow a uniform probability density. By numerically simulating the model, we find that the model supports a modulated travelling wave state except for already reported 7r state and travelling wave state in the one with natural frequencies following Lorenztian probability density or a delta function. The dependence of the observed dynamics on the parameters of the model is explored and we find that the onset of synchronization in the model displays a non-monotonic dependence on both positive and negative coupling strength.展开更多
文摘目的:探讨高髋关节中心技术全髋关节置换术(total hip arthroplasty,THA)治疗CroweⅡ、Ⅲ型发育性髋关节发育不良(developmental dysplasia of hip,DDH)并重度髋关节炎(hip osteoarthritis,HOA)的临床疗效。方法:2018年1月至2020年1月收治CroweⅡ、Ⅲ型DDH并重度HOA患者74例,37例行解剖型髋关节中心重建为对照组,其中男7例,女30例,年龄42~65(58.40±4.98)岁,身体质量指数(body mass index,BMI)18~29(23.02±2.21)kg·m^(-2)。37例行高髋关节中心技术重建为研究组,其中男5例,女32例,年龄41~65(57.31±5.42)岁,BMI 18~29(23.14±2.07)kg·m^(-2)。患者术前表现髋关节疼痛、功能及关节活动度受限、步态不稳等。比较两组围术期指标,术前及术后3、6、12个月分别评估患者髋关节功能、平衡功能及步态情况,术前及术后12个月测量双下肢长度差、旋转中心水平距离、旋转中心垂直距离、股骨偏心距。结果:术后随访12个月,研究组失访1例,对照组失访2例。研究组手术时间短于对照组,术中出血量少于对照组(P<0.05)。术后3、6个月研究组Harris评分、Berg平衡量表(Berg balance scale,BBS)评分、步速、步频、单步长大于对照组(P<0.05),术后12个月以上指标组间比较,差异无统计学意义(P>0.05);术后12个月,研究组旋转中心垂直距离大于对照组(P<0.05),两组双下肢长度差、旋转中心水平距离、股骨偏心距比较,差异无统计学意义(P>0.05);两组均未出现并发症。结论:两种髋关节中心重建方式应用于DDH并重度HOA患者THA远期效果相当,安全性良好,且高髋关节中心技术重建可缩短手术时间,减少术中出血量,同时在早期恢复患者髋关节功能、平衡功能及步行功能方面具有一定优势。
基金National Natural Science Foundation of China under Grant No.10405004
文摘The phenomena of GS in a drive-response system have been studied. Several kinds of GS are found： the driver-induced GS, the responser-induced GS, and the intermediate GS. The mechanism generating these types of GS is given and the roles played by response and drive dynamics in realizing different GS states are discussed.
基金The project supported by National Natural Science Foundation of China under Grant No. 10405004
文摘The spontaneous drift of the spiral wave in a finite domain in the complex Ginzburg Landau equation is investigated numerically. By using the interactions between the spiral wave and its images, we propose a phenomenological theory to explain the observations.
文摘We investigate the Turing-like wave instability of the uniform oscillator in oscillatory mediums using theoretical and flumerical methods. A propagating wave pattern originated at the corner of the system emerges when the uniform oscillator becomes unstable via Thring-like wave instability. Bifurcations from periodically propagated wave patterns to quasi-periodically propagated wave patterns, then to spatiotemporal chaos occur, as the system size increases from the instability threshold of the uniform oscillator.
基金by the New Century Excellent Talent Project of the Ministry of Education of China(NECT-07-0112)the National Natural Science Foundation of China under Grant No 10775022。
文摘Based on the recently proposed concepts of asymptotic behaviors,i.e.pure cooperator,pure defector and fluctuating strategy,we explore thoroughly the dynamical organization of the strategy pattern in evolutionary prisoner's dilemma game on scale-free networks.
文摘We investigate the evolutionary Prisoner＇s dilemma game on the simplest spatial networks constructed as geometrical graphs. The optimal cooperation enhancement against the topology randomness is found. It is proposed that the optimal behavior of the cooperation results from the competition between individuals with high degrees and with low degrees： the former assists the formation of cooperator clusters and the latter tends to prevent the formation of such dusters.
基金Supported by National Natural Science Foundation of China under Grant No. 11247279
文摘A generalization of the Kuramoto model in which oscillators are coupled to the mean field with random signs is investigated in this work. We focus on a situation in which the natural frequencies of oscillators follow a uniform probability density. By numerically simulating the model, we find that the model supports a modulated travelling wave state except for already reported 7r state and travelling wave state in the one with natural frequencies following Lorenztian probability density or a delta function. The dependence of the observed dynamics on the parameters of the model is explored and we find that the onset of synchronization in the model displays a non-monotonic dependence on both positive and negative coupling strength.
