一类非线性混合整规划的无约束连续化解法

将整系数多项式 0 - 1混合整规划问题化成无约束多项式规划问题。通过解该问题 ,能得到原问题的近似解。处理方法的特点是能够直接处理不等式约束情形 ,而不需要先将不等式约束化成等式约束再来处理     

Block external bootstrap in partially linear models with nonstationary strong mixing error terms

The authors extend the block external bootstrap to partially linear regression models with strongly mixing, nonstationary error terms. In addition to providing an approximate distribution for the semiparametric least square estimator of the parametric component, they propose a consistent estimator of the co‐variance matrix of this estimator.     

La médiane simpliciale d'Oja: Existence,unicité et stabilité

Oja (1983) examined various ways of measuring location, scatter, skewness, and kurtosis for multivariate distributions. Among other measures of location, he introduced a generalised median known in this paper under the name of the Oja median. In our study of the existence of that median, we show that Oja's definition can only be applied to distributions having a mean. In dimension d θ 2, we establish that the usual method of extension breaks down, which raises the question of the validity of the concept as a notion of median. Two fundamental theoretical properties of that median are also considered: uniqueness and consistency.     

欧共体竞争法的实施机制及对我国的启示

欧盟理事会第1/2003号条例取代了1962年第17号条例,废除了原有的事前申报制度,实现了欧共体竞争法实施的非集权化,加强了欧盟委员会的调查权,由此确立了“非集权”的竞争法实施机制①。在新机制下,委员会负责制定和发展欧共体的竞争政策,实施欧共体竞争法的任务由各成员国承担。作为世界上最先进的竞争法体系之一,欧共体竞争法的最新发展对我国竞争法制的确立有重要的借鉴意义。     

99mTc-TRODAT-1在鉴别诊断帕金森病与血管性帕金森综合征中的作用研究

目的研究脑的SPECT显像在鉴别诊断帕金森病与血管性帕金森综合征中的作用。方法10例血管性帕金森综合征患者、20例帕金森病患者与16例健康对照者。口服复方碘溶液后30min,从患者的肘正中静脉注射放射性活度为1110MBq的99mTC TRODAT1,2h后完成图象采集,后24h之内由SPECT中心进行图象分析。感兴趣区域(ROI,regions of interes)包括纹状体区:左右侧壳核及左右侧尾状核。对比区域用跟侧小脑皮质区域,并进行半定量分析,确定每一位检查者的感兴趣区域与小脑的比值。结果将SPECT/CT同机融合脑成像及同机脑CT采集,经COSEM重建后得到SPECT脑横断、冠状、矢状面的三维图像。并与CT进行同机图像融合,观察多巴胺神经元较为集中的区域即双侧纹状体区(尾状核、壳核)放射性分布。健康对照者,在纹状体的任何区域无论是壳核还是尾状核,都没有明显的多巴胺转运蛋白扫描的减低。血管性帕金森综合征患者壳核和尾状核均有轻度减低,但无论是壳核还是尾状核的减低同健康对照者相比,均无统计学意义。但是帕金森病毒者的纹状体区域特别是壳核显示出明显的99mTcTRODAT1摄取量的下降,既多巴胺转运蛋白的扫描的减低。PD组与对照组壳核与尾状核的摄取比值均有明显差别(P<0·01),PD组患者的壳核比尾状核的多巴胺放射性减低明显。对于每一位PD患者双侧的差别进行配对t检验,说明PD患者的SPECT半定量分析多以发病侧肢体的对侧纹状体减低明显。结论99mTc TRODAT1与多巴胺转运蛋白有较高的亲和力,且有较高的特异性与选择性。99mTc TRODAT1SPECT/CT同机融合脑成像是鉴别血管性帕金森综合征与帕金森病患者的较为适用的方法。     

相互作用玻色子模型的连续变量表示

本文应用生成坐标方法(GCM)给出了相互作用玻色子模型(IBM)的连续变量表示,统一地处理了球形核和形变核的情形,并对轴对称形变核作出其连续变量表示的数值计算,其结果与IBM代数解(PHINT程序)是一致的.     

按“知”分配何以可能？

我国高校教师薪酬在计划经济时期以平均分配为价值取向,在市场经济时期以效率为价值取向。在中国特色社会主义新时代和知识经济时期,鼓励知识创新和兑现知识价值成为新的取向。我国高校现行岗位绩效工资制度虽然将教师的实际贡献与薪酬分配联系了起来,但也存在薪酬结构缺陷、薪酬测量失真、薪酬激励偏移和薪酬调整滞后等问题。与岗位绩效工资相比,按“知”分配的3P-M薪酬模型改进了人力资本薪酬（P₁）,以补偿教师人力资本的前期投入、当期追加和后期增值;调整了岗位薪酬（P₂）,通过强化保障性薪酬以轧平薪酬曲线斜率;优化了绩效薪酬（P₃）,以解决教师多任务“委托—代理”的契约设计问题;新增了市场薪酬（M）,以补偿因内部薪酬总量不足给教师带来的潜在损失。其中,3P重在盘活存量,M重在扩充增量,两者共同构成了3+X薪酬体系。     

平面三次微分系统研究综述

本文首先阐明了研究E3的重要意义,然后指出E3的一般性质。奇点的分类与判定极限环线与奇异闭轨的存在性与唯一性,相对位置与代数曲线解．     

Bequests as a heir "disciple device."

This paper develops a model ofinter vivos gifts and bequests in a setting of moral hazard and adverse selection. Altruistic parents do not perfectly know how much effort their children make to earn their living, nor do they know their true level of ability.Inter vivos gifts take place prior to the realization of the children's earnings whereas at the moment of bequests, parents do observe them. We show that an optimal transfer policy generally uses a mix ofinter vivos gifts — deemed as more efficient — and bequests — deemed as more redistributive.We are thankful to Allessandro Cigno, Jacques Cremer, Claude d Aspremont and anonymous referees for their comments.Responsible editor: Alessandro Cigno     

Network analysis in evaluation: some words of caution

Network analysis, a methodology derived from general systems' theory, can be utilized as a community mental health administrative-evaluation procedure. Evaluation parameters derived from analysis of patient data as they “flow” through a network of agency services, provide measures of systemic functioning. These parameters include “longest paths” and various ratio relationships as evaluation measures of service delivery. The limitations of network analysis are examined by means of conceptual analyses, and phenomena that emerged from research experience. The necessity for both quantitative and qualitative data to ensure a meaningful evaluation of mental health services is explained. Conclusions about the value of the network analysis approach are considered.