A common fixed point theorem for compatible quasi contractive self mappings in metric spaces

A common fixed point theorem for weakly commuting quasi contractive self mappings with contracting orbital diameters in metric spaces [V. Berinde, A common fixed point theorem for quasi contractive type mappings, Ann. Univ. Sci. Budapest. 46 (2003) 81-90] is extended to the more general class of compatible quasi contractive self mappings. Our result does extend and generalize numerous related results in literature.     

基于S1000D标准的技术出版物公用信息管理研究

为解决飞机技术出版物中公用信息的管理问题,提高信息的重用性和数据交换的便利性。通过对S1000D标准中公用信息库(CIR)概念的介绍,结合CIR在某大型客机维修类技术出版物编写中的实际应用情况,具体说明了CIR在公用数据管理、技术出版物编写、数据交换方面的优势,及其在提高技术出版物质量方面所起的重要作用。     

Common fixed point theorem for hybrid generalized multi-valued contraction mappings

In this paper, we introduce the notion of a hybrid generalized multi-valued contraction mapping and establish the common fixed point theorem for this mapping. Our results generalize, unify, extend and complement several common fixed point theorems of many authors in the literature.     

ICP-MS测定血中镁、铜、铅浓度时的基体效应单一内标校正方法研究

ICP-MS测定模拟全血基体中不同质量段的Mg, Cu, Pb元素,考察基体效应对测定值的影响,分别采用传统内标法和单一内标CAIS方法(common analyte internal standardization)对其进行校正和比较。结果表明CAIS方法适用于不同浓度血液基体中多种元素的同时校正,且效果良好,其相对平均误差仅为3.05%,明显低于传统内标法的12.39%和校正前的23.91%;CAIS方法不受内标元素和被测元素质量数差异、测定强度差异以及电极电位差异的限制;使用全血和血清标准物质对CAIS方法可靠性进行验证,测定值全部落在标准值范围内。     

单值映射对与集值映射对的公共不动点

在度量空间中,引进了单值映射对与集值映射对的调和概念,对调和单值映射对与集值映射对建立了公共不动点定理及相应的随机公共不动点定理。     

A fixed point theorem for a family of mappings in a fuzzy metric space

In this paper we give a common fixed point theorem for a family of mappings of a G-complete fuzzy metric space (X, M, *) into itself. From this result we deduce a common fixed point theorem for a family of mappings of a complete metric space (X, d) into itself. Supported by University of Palermo.     

Strong convergence of an implicit iteration process for a finite family of asymptotically quasi-nonexpansive mappings

In the present paper, we prove that the modified implicit iteration sequence for a finite family of asymptotically quasi-nonexpansive mappings converges strongly to a common fixed point of the family in a uniformly convex Banach space, requiring one member T in the family to be semi-compact. Our results extend and improve some recent results.     

DMSO对马铃薯块茎圆片的透性、蛋白谱及多核糖体状况的影响

二甲亚砜(DMSO)应用于植物研究,报道较少。有人报道可作为冷冻保护剂;可以使黑麦根尖细胞的有丝分裂指数下降;DMSO与EDTA(二乙胺四乙酸)配合处理玉米植株,可以提高玉米的杂交重组率.本文研究DMSO对马铃薯块茎圆片的细胞透性、可溶性蛋白及多核糖体状况的影响,为DMSO作为一个外源因素和预处理手段,应用于植物组织培养提供实验依据.     

几种常见油气藏的压力分布及应用

本文用新方法描述了井筒储集，表皮效应及湍流现象对气藏压力的影响，提出了具有适定性的双重介质气藏渗流问题，并在无限大，有界定压和有界封闭三种典型外边界条件下推出了双重介质气藏内真实气体拟压力分布的表达式。     

When Can Statistical Theories Be Causally Closed?

The notion of common cause closedness of a classical, Kolmogorovian probability space with respect to a causal independence relation between the random events is defined, and propositions are presented that characterize common cause closedness for specific probability spaces. It is proved in particular that no probability space with a finite number of random events can contain common causes of all the correlations it predicts; however, it is demonstrated that probability spaces even with a finite number of random events can be common cause closed with respect to a causal independence relation that is stronger than logical independence. Furthermore it is shown that infinite, atomless probability spaces are always common cause closed in the strongest possible sense. Open problems concerning common cause closedness are formulated and the results are interpreted from the perspective of Reichenbach's Common Cause Principle (RCCP).