With global integration going deeper,bilingualism has become a more social issue than a purely linguistic phenomenon.Over seas scholars have been studying in this field for a long time while in China,studies regarding...With global integration going deeper,bilingualism has become a more social issue than a purely linguistic phenomenon.Over seas scholars have been studying in this field for a long time while in China,studies regarding bilingualism are still in its early stages.This pa per provides a historic review on the definition,categorization as well as its cognitive functions.Although it is still a question whether bilin gualism is an advantage or disadvantage to human beings' especially children's cognitive ability,this paper has concluded that early studies showed more negative results while recent research has shifted to a more positive attitude.展开更多
In order to study the modulatory effects of compound polysaccharide Erweikang on the immune function of the immunosuppressive mice, the positive immune modulati on of Erweikang at different doses and different time p...In order to study the modulatory effects of compound polysaccharide Erweikang on the immune function of the immunosuppressive mice, the positive immune modulati on of Erweikang at different doses and different time points was compared when n ormal saline and cyclophosphamide served as controls. The results showed that di fferent doses of Erweikang could effectively reverse the decreased induction lev els of NK, IL 2, γ IFN and the contents of TNF and IgG of the immunosu ppressive mice after administration of Erweikang for 7 to 14 days. It was sugges ted that compound polysaccharide Erweikang presents positive immune modulation i n dose and time dependent manners.展开更多
To investigate the effect of early rehabilitation on neurofunctional outcome after surgery in chil- dren with spinal tumors, this study reviewed the medical charts and radiographic records of 70 pediatric patients （1...To investigate the effect of early rehabilitation on neurofunctional outcome after surgery in chil- dren with spinal tumors, this study reviewed the medical charts and radiographic records of 70 pediatric patients （1-17 years old） who received spinal tumor surgical removal. The peddiatric patients received rahabilitation treatment at 4 （range, 2-7） days after surgery for 10 （range, 7-23） days. Results from the Modified McCormick Scale, Functional Independence Measure for Chil- dren, American Spinal Injury Association Impairment Scale and Karnofsky Performance Status Scale demonstrated that the sensory function, motor function and activity of daily living of pedi- atric children who received early rehabilitation were significantly improved. Results also showed that tumor setting and level localization as well as patients＇s clinical symptoms have no influences on neurofunctional outcomes.展开更多
Spectrum sharing for efficient reuse of licensed spectrum is an important concept for cognitive radio technologies.In a spectrum-sharing system(SSS),deploying the antennas in a distributed manner can offer a new spati...Spectrum sharing for efficient reuse of licensed spectrum is an important concept for cognitive radio technologies.In a spectrum-sharing system(SSS),deploying the antennas in a distributed manner can offer a new spatial dimension for the efficient reuse of licensed frequency bands.To improve the whole performance of multiple secondary users(SUs),this paper addresses the problem of coordinated multi-SU spectrum sharing in a distributed antenna-based SSS.By adopting the Hungarian method,the primal decomposition method and pricing policy,we propose a coordinated multi-user transmission scheme,so as to maximize the sum-rate of SUs.Simulation results show that the proposed method can significantly enhance the system performance,and the computational complexity is low.展开更多
Abstract. In this paper, we study the quotient of hypergeometric functions μα （r） in the theory of Ramanujan＇s generalized modular equation for α ∈（0, 1/2]. Several new inequalities are given for this and rela...Abstract. In this paper, we study the quotient of hypergeometric functions μα （r） in the theory of Ramanujan＇s generalized modular equation for α ∈（0, 1/2]. Several new inequalities are given for this and related functions. Our main results complement and generalize some known results in the literature.展开更多
The paper approaches the problem of the command functions of galvanometer-based scanners （GS） that are necessary to produce the linear plus parabolic scanning function of the GS, which we have proved previously to p...The paper approaches the problem of the command functions of galvanometer-based scanners （GS） that are necessary to produce the linear plus parabolic scanning function of the GS, which we have proved previously to produce the highest possible duty cycle （i.e., time efficiency） of the device. We have completed this theoretical aspect （which contradicted what has been stated previously in the literature, where it has been considered that the linear plus sinusoidal scanning function was the best） with the experimental study of the most used scanning functions of the GSs （sawtooth, sinusoidal and triangular）, with applications in biomedical imaging, in particular in optical coherence tomography, demonstrating that the triangular function is always the best one to be applied, from both an optical and a mechanical point of view. In the present study the input voltage/command function which should be applied to the GS to produce the desired triangular scanning function （with controlled non-linearity for the fastest possible stop-and-turn portions） was determined analytically, in relationship with the active torque that drives the device. This command function is analyzed with regard to the specific, respectively required parameters of the GS： natural frequency and damping factor, respectively scan speed and amplitude. The modeling in an open loop control structure of the GS is finally discussed as a trade-off between using the highest possible duty cycle and minimizing the maximum peaks of the input voltage.展开更多
Objectives To assess the effect of delayed opening the infarct - related artery (IRA) by percutanous coronary intervention (PCI) on the late phase left ventricular function after acute ante- rior myocardial infarction...Objectives To assess the effect of delayed opening the infarct - related artery (IRA) by percutanous coronary intervention (PCI) on the late phase left ventricular function after acute ante- rior myocardial infarction. Methods 64 patients with initial Q - wave anterior myocardial infarction and the infarct - related arteries were total occluded conformed by angiogram at 2 to 14 days after onset were divided into successful PCI group and control group ( not re- ceiving PCI or the IRA not re - opened). 2 - DE was performed at early phase ( about 3 weeks) , 2 and 6 months after onset of AMI respectively to detect the left ventricular function and left ventricular wall motion ab- normality (VWMA). The total congestive heart failure events were recorded during 6 months follow-up. Re- sults VWMA scores, left ventricular ejection frac- tion (LVEF) , left ventricular end - diastolic and end - systolic volume indices ( LVEDVI and LVDSVI) were similar in 2 groups at early phase and 2 months. There were no differences between early phase and 2 months in each group too. VWMA scores and LVEF did not changed at 6 months in each group compared with the early phase and 2 months ( P > 0. 05 ). But LVEDVI and LVESVI were significantly smaller in the successful PCI group than in the control group (P < 0.01, P < 0. 05). The congestive heart failure events were taken place in 19% of patients in control group com- pared with 2% in successful PCI group ( P > 0. 05 ). Conclusions Although the infarct size does not changed, delayed opening the IRA has beneficial effect to the late phase left ventricular dilatation after acuteanterior myocardial infarction.展开更多
目的基于不同频率下全身振动疗法(whole body vibration,WBV)对不随意运动型脑瘫粗大运动及步行功能的影响,为后续WBV临床推广提供参考意义。方法选取2021年10月至2022年11月在西南医科大学附属医院康复医学科门诊和/或入院6~12岁不随...目的基于不同频率下全身振动疗法(whole body vibration,WBV)对不随意运动型脑瘫粗大运动及步行功能的影响,为后续WBV临床推广提供参考意义。方法选取2021年10月至2022年11月在西南医科大学附属医院康复医学科门诊和/或入院6~12岁不随意运动型脑瘫60例,按随机数字表法分为对照组(n=20)、(25±5)Hz组(n=20)及(35±5)Hz组(n=20)。3组均进行常规康复训练,(25±5)Hz组额外接受振动频率为(25±5)Hz的WBV,(35±5)Hz组接受(35±5)Hz的WBV,3组均治疗8周。在治疗前后对3组患儿使用Berg平衡量表(Berg Balance Scale,BBS)、起立-行走计时测试(Time to Up and Go Test,TUGT)、粗大运动功能测试量表(Gross Motor Function Measure-88,GMFM-88)及足印分析法评定疗效。结果治疗后3组患儿各项评分指标均优于治疗前(P<0.001);其中(35±5)Hz组BBS评分(F=12.502)、TUGT(F=8.211)、GMFM-88的D区、E区评分(F=12.802、8.505)、跨步长(F=12.279)、步宽(F=13.582)及1 min步行距离(F=12.619)均优于(25±5)Hz组及对照组(P<0.05或P<0.01);(25±5)Hz组疗效优于对照组(P<0.05或P<0.01)。结论WBV可提高不随意运动型脑瘫儿童躯干控制、改善其下肢粗大运动及步行功能,且(35±5)Hz的WBV疗效优于(25±5)Hz的WBV。展开更多
文摘With global integration going deeper,bilingualism has become a more social issue than a purely linguistic phenomenon.Over seas scholars have been studying in this field for a long time while in China,studies regarding bilingualism are still in its early stages.This pa per provides a historic review on the definition,categorization as well as its cognitive functions.Although it is still a question whether bilin gualism is an advantage or disadvantage to human beings' especially children's cognitive ability,this paper has concluded that early studies showed more negative results while recent research has shifted to a more positive attitude.
文摘In order to study the modulatory effects of compound polysaccharide Erweikang on the immune function of the immunosuppressive mice, the positive immune modulati on of Erweikang at different doses and different time points was compared when n ormal saline and cyclophosphamide served as controls. The results showed that di fferent doses of Erweikang could effectively reverse the decreased induction lev els of NK, IL 2, γ IFN and the contents of TNF and IgG of the immunosu ppressive mice after administration of Erweikang for 7 to 14 days. It was sugges ted that compound polysaccharide Erweikang presents positive immune modulation i n dose and time dependent manners.
基金Supported by National Natural Science Foundation of China （60474002, 60674041） and National High Technology Research and Development Program of China （863 Program） （2006AA04Z173）
文摘To investigate the effect of early rehabilitation on neurofunctional outcome after surgery in chil- dren with spinal tumors, this study reviewed the medical charts and radiographic records of 70 pediatric patients （1-17 years old） who received spinal tumor surgical removal. The peddiatric patients received rahabilitation treatment at 4 （range, 2-7） days after surgery for 10 （range, 7-23） days. Results from the Modified McCormick Scale, Functional Independence Measure for Chil- dren, American Spinal Injury Association Impairment Scale and Karnofsky Performance Status Scale demonstrated that the sensory function, motor function and activity of daily living of pedi- atric children who received early rehabilitation were significantly improved. Results also showed that tumor setting and level localization as well as patients＇s clinical symptoms have no influences on neurofunctional outcomes.
基金supported in part by the National Science Foundation of China for Young Scholars under grant No.61201186The National Basic Research Program undergrant No.2012AA01A502+5 种基金National Natural Science Foundation of China under grant No.61201192National S&T Major Project under grant No.2014ZX03003003-002Tsinghua-HUAWEI Joint R&D on Soft Defined Protocol StackTsinghua-HUAWEI Joint Research on 5G Air Interface TechnicalTsinghua-Qualcom joint research programIndependent innovation on Future Virtualization Platform under grant No.015Z02-3
文摘Spectrum sharing for efficient reuse of licensed spectrum is an important concept for cognitive radio technologies.In a spectrum-sharing system(SSS),deploying the antennas in a distributed manner can offer a new spatial dimension for the efficient reuse of licensed frequency bands.To improve the whole performance of multiple secondary users(SUs),this paper addresses the problem of coordinated multi-SU spectrum sharing in a distributed antenna-based SSS.By adopting the Hungarian method,the primal decomposition method and pricing policy,we propose a coordinated multi-user transmission scheme,so as to maximize the sum-rate of SUs.Simulation results show that the proposed method can significantly enhance the system performance,and the computational complexity is low.
基金Supported by the Zhejiang Provincial Natural Science Foundation of China(LQ17A010010)the National Natural Science Foundation of China(11171307,11671360)the Natural Science Foundation of the Department of Education of Zhejiang Province(Y201328799)
文摘Abstract. In this paper, we study the quotient of hypergeometric functions μα （r） in the theory of Ramanujan＇s generalized modular equation for α ∈（0, 1/2]. Several new inequalities are given for this and related functions. Our main results complement and generalize some known results in the literature.
基金the support of the US Department of State through Fulbright Scholar Grant 474/2009
文摘The paper approaches the problem of the command functions of galvanometer-based scanners （GS） that are necessary to produce the linear plus parabolic scanning function of the GS, which we have proved previously to produce the highest possible duty cycle （i.e., time efficiency） of the device. We have completed this theoretical aspect （which contradicted what has been stated previously in the literature, where it has been considered that the linear plus sinusoidal scanning function was the best） with the experimental study of the most used scanning functions of the GSs （sawtooth, sinusoidal and triangular）, with applications in biomedical imaging, in particular in optical coherence tomography, demonstrating that the triangular function is always the best one to be applied, from both an optical and a mechanical point of view. In the present study the input voltage/command function which should be applied to the GS to produce the desired triangular scanning function （with controlled non-linearity for the fastest possible stop-and-turn portions） was determined analytically, in relationship with the active torque that drives the device. This command function is analyzed with regard to the specific, respectively required parameters of the GS： natural frequency and damping factor, respectively scan speed and amplitude. The modeling in an open loop control structure of the GS is finally discussed as a trade-off between using the highest possible duty cycle and minimizing the maximum peaks of the input voltage.
文摘Objectives To assess the effect of delayed opening the infarct - related artery (IRA) by percutanous coronary intervention (PCI) on the late phase left ventricular function after acute ante- rior myocardial infarction. Methods 64 patients with initial Q - wave anterior myocardial infarction and the infarct - related arteries were total occluded conformed by angiogram at 2 to 14 days after onset were divided into successful PCI group and control group ( not re- ceiving PCI or the IRA not re - opened). 2 - DE was performed at early phase ( about 3 weeks) , 2 and 6 months after onset of AMI respectively to detect the left ventricular function and left ventricular wall motion ab- normality (VWMA). The total congestive heart failure events were recorded during 6 months follow-up. Re- sults VWMA scores, left ventricular ejection frac- tion (LVEF) , left ventricular end - diastolic and end - systolic volume indices ( LVEDVI and LVDSVI) were similar in 2 groups at early phase and 2 months. There were no differences between early phase and 2 months in each group too. VWMA scores and LVEF did not changed at 6 months in each group compared with the early phase and 2 months ( P > 0. 05 ). But LVEDVI and LVESVI were significantly smaller in the successful PCI group than in the control group (P < 0.01, P < 0. 05). The congestive heart failure events were taken place in 19% of patients in control group com- pared with 2% in successful PCI group ( P > 0. 05 ). Conclusions Although the infarct size does not changed, delayed opening the IRA has beneficial effect to the late phase left ventricular dilatation after acuteanterior myocardial infarction.
文摘目的基于不同频率下全身振动疗法(whole body vibration,WBV)对不随意运动型脑瘫粗大运动及步行功能的影响,为后续WBV临床推广提供参考意义。方法选取2021年10月至2022年11月在西南医科大学附属医院康复医学科门诊和/或入院6~12岁不随意运动型脑瘫60例,按随机数字表法分为对照组(n=20)、(25±5)Hz组(n=20)及(35±5)Hz组(n=20)。3组均进行常规康复训练,(25±5)Hz组额外接受振动频率为(25±5)Hz的WBV,(35±5)Hz组接受(35±5)Hz的WBV,3组均治疗8周。在治疗前后对3组患儿使用Berg平衡量表(Berg Balance Scale,BBS)、起立-行走计时测试(Time to Up and Go Test,TUGT)、粗大运动功能测试量表(Gross Motor Function Measure-88,GMFM-88)及足印分析法评定疗效。结果治疗后3组患儿各项评分指标均优于治疗前(P<0.001);其中(35±5)Hz组BBS评分(F=12.502)、TUGT(F=8.211)、GMFM-88的D区、E区评分(F=12.802、8.505)、跨步长(F=12.279)、步宽(F=13.582)及1 min步行距离(F=12.619)均优于(25±5)Hz组及对照组(P<0.05或P<0.01);(25±5)Hz组疗效优于对照组(P<0.05或P<0.01)。结论WBV可提高不随意运动型脑瘫儿童躯干控制、改善其下肢粗大运动及步行功能,且(35±5)Hz的WBV疗效优于(25±5)Hz的WBV。
