增长曲线模型非齐次线性估计的可容许性

讨论增长曲线模型Y =X1BX2 +ε中回归矩阵B的函数C1BC2 的估计L1YL2 +A ,在矩阵损失 (LT2 L1)Y +A - (ST2 XT2 S1X1)B (LT2 L1)Y +A - (ST2 XT2 S1X1)B T 下 ,我们得到了非齐次线性估计L1YL2 +A在非齐次线性估计类Г ={L1YL2 +A|L1:t×p ,L2 ;n×n ,A :t×s均为已知实阵 }中可容许的充要条件 :L1YL2在Г0 ={L1YL2 |L1:t×p ,L2 :n×s均为已知实阵 }中容许且当LT2 XT2 L1X1=ST2 XT2 S1X1时有A =0。     

An effective discrete dynamic convexized method for solving the winner determination problem

The winner determination problem (WDP) arises in combinatorial auctions. It is known to be NP-hard. In this paper, we propose a discrete dynamic convexized method for solving this problem. We first propose an adaptive penalty function to convert the WDP into an equivalent unconstrained integer programming problem. Based on the structure of the WDP, we construct an unconstrained auxiliary function, which is maximized iteratively using a local search and is updated whenever a better maximizer is found. By increasing the value of a parameter in the auxiliary function, the maximization of the auxiliary function can escape from previously converged local maximizers. To evaluate the performance of the dynamic convexized method, extensive experiments were carried out on realistic test sets from the literature. Computational results and comparisons show that the proposed algorithm improved the best known solutions on a number of benchmark instances.     

Bayesian hierarchical joint modeling using skew-normal/independent distributions

The multiple longitudinal outcomes collected in many clinical trials are often analyzed by multilevel item response theory (MLIRT) models. The normality assumption for the continuous outcomes in the MLIRT models can be violated due to skewness and/or outliers. Moreover, patients’ follow-up may be stopped by some terminal events (e.g., death or dropout), which are dependent on the multiple longitudinal outcomes. We proposed a joint modeling framework based on the MLIRT model to account for three data features: skewness, outliers, and dependent censoring. Our method development was motivated by a clinical study for Parkinson’s disease.     

1990—2008年我国人口素质变化的实证分析

1990—2008年我国人口素质变化的评估分析表明1990—2002年是我国人口素质提高较快的时期,而从2003年开始,我国人口素质出现了较为明显的下降趋势。人口社会素质的改善对人口整体素质的提升所起到的作用要大于人口自然素质。在今后的社会管理活动中,有关部门要采取更有力的措施确保安全生产和加强道德建设,此外,加强我国公共卫生事业的建设也是提高人口素质不容忽视的一个方面。     

论我国刑事审判监督“诉监分置模式”之构建——以“角色理论”为分析工具

由公诉人行使刑事审判监督职能的合理性以及实践中存在的监督不到位的问题,是我国刑事诉讼制度中备受诟病和争议的焦点。本文运用法社会学的研究路径和角色理论解读刑事审判监督对我国现代刑事诉讼制度构建的影响,提出了有利于增强监督实效的诉监分置模式的理论构想。     

科技查新业务流程的再造

对科技查新工作的流程进行了分析,指出其适合于进行流程再造的特点,据此提出了科技查新流程再造的目标、科技查新管理信息平台构建的层次结构和功能模块划分,最后给出了流程再造不同阶段的任务.     

主体·自我·他者——论拉康欲望理论的诗学建构

欲望是文学作品所反映的一个重要主题。剖析文学中欲望这一主题时易过于注重社会环境和意识形态等外部因素的作用,而忽略了作家创作和小说中人物言行的心理动因。后精神分析学家雅克·拉康的欲望理论提出\     

塔式太阳能热发电燃气轮机循环功率优化

用热力学方法研究了三级闭式回热再热中冷燃气轮机循环的效率、功率和中间压比性能,分析了变温热源条件下中冷回热再热燃气轮机循环性能,通过数值计算得到了输出功率最大时高低温侧各换热器的热导率最佳分配和最佳中间压比,优化了总压比,得出了双重最大功率.     

江苏中小企业信用再担保业务经济效益研究

江苏中小企业信用再担保体系的建立有效地缓解了中小企业融资难题。运用系统动态学方法,模拟江苏再担保业务经济效益演化趋势,发现代偿率是影响经济效益的关键因素,能实现江苏再担保业的长远发展。     

基于温度图式的英语概念隐喻

温度图式作为一种重要的基本意象图式,在英语概念系统中具有不容忽视的作用。研究表明：基于温度图式的英语概念隐喻表达,可以通过4个温度范畴投射到8个隐喻领域：疾病、色彩、兴趣与注意力、人或事物的活动程度、情感、社会地位、危险与压力、知识理解力,从而为下列假说提供佐证,即人类通过具体的身体经验来隐喻性地理解和构筑抽象的思维、情感：态度等概念系统。