Multiobjective Decision Making: the Combined Approach

: In this paper, a new approach for generating all or partly efficient solutions called the Combined Approach is developed. The property of efficient solutions generated by the combined approach and its relationships with other four approaches: weighting approach, sequential approach, ε-constraint approach and hybrid approach, are discussed. Based on this combined approach, a decision-making support method called the Combined Decision-Making Method (CDMM) for multiobjective problems is developed, which is an interactive process with the decision maker. Only the aspiration levels, which reflect the decision maker's satisfying degrees for corresponding objectives, are needed to be supplied by the decision maker step by step as he will. This interactive way for objectives can easily be accepted. Finally, the application of the proposed decision making method in the resource allocation problem is discussed, and an example for the production decision analysis of the solar energy cells given.     

红背竹芋(Marantaceae Stromanthe sanguinea Sond)的心脏作用研究

从红肯竹芋的植物叶中提得生物活性物质——红背竹芋黄酮碳甙。红背竹芋黄酮碳甙降低强心甙的LD100,这一实验结果未能证明该植物是民间秘方见血封喉箭毒的解毒剂。我们首先发现红背竹芋黄酮碳甙本身具有抑制心肌收缩力,降低自律性的作用,这一作用,不是通过竞争性对抗肾上腺素能β-受体或兴奋胆碱能M-受体所致,而是直接的作用。     

录音机机芯动态特性谱分析诊断

录音机机芯动态特性谱分析诊断是对机芯的动态抖晃(Wow-Flutter)信号,用时间序列谱分析方法进行处理,可以诊断出机芯传动系统中各部件的缺陷和影响抖晃的程度。本文介绍了时间序列分析的线性谱(快速傅里叶变换FFT谱)和非线性谱(自回归AR谱)。通过分析计算,诊断出CM1000B型机芯诸传动部件对抖晃误差的作用。最后对两种时间序列谱分析的结果和在实际运用中的优缺点进行了比较。     

EFFECT OF OPENING OPERATING PARAMETERS ON YARN QUALITY IN FINE AND MEDIUM COUNT FRICTION SPINNING

In this paper, a quantitative analysis of the opening quality in friction spinning and its main ef-fecting factors is first made. Upon this basis the Box-Hunter's experimental design method is usedto establish the quadratic regressional equations in terms of primary opening technologicalparameters and yarn quality for medium and fine count friction spinning. The results of analysisand discussion show that the proper choice of opening roller speed and its reasonable match withthe yarn count is singificant for ensuring the spinning quality index as well as reducing unevenness,thin and thick places of the yarn.     

有限子域非均质问题的边界元解

本文基于位段概念,以四子域问题为例,导出了解n个子域问题的非均质边界元总域矩阵方程,给出其相应的计算公式,列举了算例。     

磁控溅射离子镀膜组织与相结构的电镜研究

本文主要应用JEM-100CXⅡ型透射电镜研究了在Ｃ-u基材上磁控溅射离子镀Ａl及ＣｒＮｉ不锈钢时的沉积层组织与相结构。研究发现; 在一系列沉积工艺条件下，Ｃｕ基镀 ＣｒＮｉ不锈钢时，其涂层结构只含一种 Ｆｅ基 α相;镀 Ａl时，随基板偏压升高,可获得一系列新合金相，如；Al,AlCu,Al-2Cu-3,Al-4Cu-9,ＡlＣｕ-3，ＡlＣｕ-4，ａＣｕ等。这些结果将为进一步探索这类涂层的形成机理提供必要的理论与实验根据。     

杂种番木瓜人工种子田间试验

本文首次报道番木瓜人工种子植株田间试验获得成功。     

几个水稻品种生育期的模糊识别模型

本文提出了生育期模糊集的概念,并根据假设、三分法原理和经验,建立了各生育期的隶属度函数,从而进行水稻生育期的模糊识别。同时还根据实验数据,确定参数与光、温等气象因素的统计关系。     

液电效应反应器的研制及其在煤转化上应用的试验

根据液电效应原理,研制了液电效应反应器。对煤、沥青、石墨等进行了气化试验,获得含氢量达60％以上的气体。总结了实验现象,讨论了反应机理。这是煤转化的又一全新方法。此外,还对固体物料进行了粉碎试验。