汉语全球教育史研究的国际视野

汉语全球教育史一直是当前学术界所关注的热点之一,进一步强化对此课题的研究不仅可以完善汉语教学在全球范围内的历史框架,同时也可以为当前汉语教学提供借鉴与经验。\"汉语全球教育史国际学术研讨会——世界汉语教育史研究会第九届年会\"的研讨内容涉及汉语教材研究、国际汉语传播、汉语本体与教学等多个领域,为当前学术界对汉语教育史的研究提供了新思路、新方法和新材料

Parallel processing for adaptive control algorithm based on fuzzy internal model

针对非线性系统,在PRAM计算模型上,探讨基于模糊内模自适应控制算法的并行处理。利用TSK建模方法,m个处理机并行地在线辨识出模糊内部模型,并采用内模控制理论并行求出H2最优控制器。仿真实验表明,并行处理方法达到亚线性加速,可以较好地满足实时在线辨识内部模型的应用需求。Based on PRAM computing model, the parallel processing for adaptive control algorithm based on fuzzy internal model, which aimed at nonlinear system, is discussed. By applying TSK-modeling scheme, the %m% processors identify fuzzy internal model on-line and design linear quadratic optimal (%H%-2-) is obtained in parallel by using the internal model control theory. The simulation experiment shows that the parallel processing method obtains sub-linear speedup, and the requirement for real-time identification of internal model on-line is basically satisfied.

Analysis of pre-S/S gene in occult hepatitis B virus infection from blood donors in Dalian,China

目的了解大连地区无偿献血者隐匿性肝炎乙型病毒感染(ObI)的情况和PrE-S/S区基因的变异情况。方法对大连市血液中心2010年12月2日-2013年5月31日的无偿献血者血液标本进行常规ElISA(HbS Ag、抗-HCV、抗-HIV和抗-TP)和HIV/HbV/HCV联合nAT筛查,对于单独核酸检测反应性的献血者加以跟踪或回溯,结合乙型肝炎血清学标志物的试验、鉴别试验、病毒定量试验和半巢式PCr来确定ObI,同时对ObI的PrE-S/S区基因序列与对照组(HbS Ag+序列,gEnbAnk)做比对分析。结果共筛查158 232份血液标本,确定了其中的69份ObI,流行率为1∶2 293(69/158 232)。41例ObI获得PrE-S/S区基因序列:b型6例、C型34例、d型1例;与对照组相比,ObI在S区的氨基酸序列的变异明显(Pb=0.013;PC=0.003),主要变异位点为b型的V14g/A、y161f/S、V168A、P217l和C型的E2g/A/V、T118r/k/A/M、P127T/l/H/S、E164d/g、l175S、S174n。结论大连地区献血者ObI在HbV基因组S区的氨基酸序列存在多个位点的变异,这些变异与ObI的产生存在某种关系,且这种关系受基因型的影响。Objective To understand the prevalence of occult infection of hepatitis B virus(OBI) and the mutations of pre-S / S gene from blood donors in Dalian.Methods From December 2nd,2010 to May 31 st,2013,samples from blood donors in Dalian Blood Center were screened with enzyme-linked immunosorbent assay(ELISA) for HBs Ag,anti-HCV,antiHIV and anti-TP and triplex nucleic acid detection(NAT) for HIV RNA,HBV DNA and HCV RNA.A follow-up was conducted on donors who were tested negative by ELISA but reactive by NAT.OBI was determined by testing the specimens from the follow-up or archive with serological markers of hepatitis B virus,identification examinations,quantitative and semi-nested PCR.The sequences of pre-S / S gene of OBIs and the control group were analyzed(HBs Ag +,Genbank).Results158 232 blood samples were screened,69 of which were OBIs.The prevalence rate of OBIs was 1 ∶ 2 293(69 /158 232).The pre-S / S gene sequences were analyzed in forty-one cases of OBI:6 were type B,34 were type C,and 1 was type D.Comparing the amino acid sequences between the experimental and control groups,there were statistical significance in the S region of OBI(PB= 0.013;PC= 0.003).The main mutation sites of amino acids for type B were V14 G / A,Y161 F / S,V168 A and P217 L while for type C were E2 G / A / V,T118 R / K / A / M,P127 T / L / H / S,E164 D / G,L175 S and S174 N.Conclusion There were multiple mutation loci on the amino acid sequence of OBI from blood donors in Dalian.A particular relationship existed between these mutations in S region from HBV genome and the mechanism of OBI,which was influenced by genotypes.大连市科技计划指导性项目(大卫科发[2013]50号); 大连市医学重点学科优秀卫生专业技术人才培养资助项目(大卫科发[2013]383号

LUTI模型原理、实现及应用综述

经济全球化背景下可持续发展已成为当今世界发展的主题。快速城镇化下的中国,城市空间的可持续性发展提上日程。为此,期待有力的、可操作的工具用于定量模拟城市空间演化过程、预测不同政策下城市空间的发展趋势,为城市化持续健康发展提供决策支持。本文分析了LUTI模型的基本原理、构建思路、实现框架和建立中国城市LUTI模型面临的问题,并回顾了国内外利用LUTI模型模拟城市空间演化过程,以辅助表明城市空间决策的研究现状,希望能为中国的城市空间可持续发展模拟分析研究提供参考

塔里木河流域水面蒸发折算系数分析

根据阿克苏上游水库1982—1987年,塔门镇2000—2002年同步观测的20m2水面蒸发池和直径20cm小型蒸发器水面蒸发资料,估算了直径20cm小型蒸发器对20m2水面蒸发池的水面蒸发折算系数,分析了其变化特征,并与北疆哈地坡及我国新蒙区年水面蒸发折算系数进行了对比。结果表明,塔里木盆地冻结期(4~10月)的水面蒸发虽然微弱,但不能忽略,水面蒸发折算系数在非冻结期逐月增大,年际变化较小,但呈现逐年下降的趋势。该结果可供塔里木河流域水量平衡研究、水资源评价、生态需水计算时参考

Achievement Motivation as Predictors of Psychological Well-being in College Students

前人研究发现成就动机影响个体的主观幸福感,而对心理幸福感的研究较少。本研究利用成就动机量表和心理幸福感量表,采用随机抽样的方法对214名大学生进行问卷调查。研究发现,成就动机与心理幸福感及其各维度呈显著正相关;成就动机的两个维度(追求成功的动机和避免失败的动机)对心理幸福感具有显著预测作用,且避免失败的维度相对贡献更大。结果提示,成就动机可以较好的正向预测心理幸福感,且避免失败的预测作用更强

无惧失败预测幸福:成就动机对心理幸福感的预测作用

前人研究发现成就动机影响个体的主观幸福感,而对心理幸福感的研究较少。本研究利用成就动机量表和心理幸福感量表,采用随机抽样的方法对214名大学生进行问卷调查。研究发现,成就动机与心理幸福感及其各维度呈显著正相关;成就动机的两个维度(追求成功的动机和避免失败的动机)对心理幸福感具有显著预测作用,且避免失败的维度相对贡献更大。结果提示,成就动机可以较好的正向预测心理幸福感,且避免失败的预测作用更强