基于软件模拟技术的微程序控制器的设计与实现

分析了微程序控制器的工作原理,定义了一个简单模型机的机器语言SML和微指令的格式,基于强大的软件模拟技术,采用面向对象思想,给出了能够解释SML程序的微程序控制器μC的设计思路和实现方法.     

一类奇异双调和方程的多解存在性

讨论了一类具有奇异系数的半线性双调和问题,运用隐函数定理证明了该问题的极小正解的存在性,然后通过变分方法又得到了该问题的第二个非平凡解.     

压弯构件的附加弯矩分析

利用压弯构件的弹性曲线微分方程,分析了轴向压力对压弯构件弯曲变形的影响,导出了各种压弯构件附加弯矩的统一算式.通过实例,定量分析了各种因素对弯矩比(附加弯矩与横力弯矩的比)的影响,给出了可忽略压弯构件附加弯矩的判定条件.研究结果表明,弯矩比与横向荷载的大小无关.当外力给定时,抗弯刚度越大,弯矩比越小;当轴向压力给定时,杆端约束越强,弯矩比越小.当轴向压力与临界压力的比值给定时,杆端约束越强,弯矩比越大.     

A comparative analysis on two solar proton events

This paper presents a comparative analysis on the two Solar Proton Events (SPE), which occurred on 14 July 2000 (Bastille Day) and 28 October 2003 (28OCT03) respectively. It is found that although the peak flux of the latter seemed to be greater than that of the former based on geostationary observations, the maximum intensities of the energetic protons (>10 MeV and 30 MeV) during the Bastille Day event were all higher than those of the 28OCT03 event according to the interplanetary observations. Further analysis indicated that the quantity of the seed particles, which could be accelerated to the energies exceeding 10 and 30 MeV by the Coronal Mass Ejection (CME)-driven shock on 14 July 2000, was far larger than that of the 28OCT03 event. In the Bastille Day case, when the CME approached to the height around 14 R⊙, the CME-driven shock would reach its maximum capacity in accelerating the solar en- ergetic protons (>100 MeV). In contrast, on 28 October 2003, when CME approached to the height about 58R⊙, the CME-driven shock reached its highest potential in accelerating the solar energetic protons of the same category. At this moment, the peak flux (>100 MeV) was about 155 pfu, which was much lower than 355 pfu measured on 14 July 2000. This demonstrated that in the Bastille Day event, the quantity of the seed particles, which could be accelerated to the energy beyond 100 MeV, was significantly larger than its counterpart in the 28OCT03 case. Therefore, the peak flux of an SPE event depends not only on the interplanetary intensity of the solar energetic particles, but also on the velocity of the associated CME-driven shock, and the quantity of the seed particles as well as on the interplanetary magnetic en- vironment. This paper also reveals that the magnetic sheath associated with ICME on 28 October 2003 captured a large number of solar energetic protons, including those having energy greater than 100 MeV.     

基于可执行规格说明的维修机构建模与仿真

为分析维修机构的性能,采用基于赋时有色Petri网的可执行规格说明语言建立了维修机构模型。模型采用自顶而下逐层分解细化、组件重用和基于状态的Petri网建模方法,对维修机构进行维修资源分析,并对动态组成维修小组和维修过程的系统状态变化过程进行了详细描述,准确反映了维修机构的维修等待和资源竞争现象,同时将定量关系嵌入到描述模型中。通过模型执行,以动画显示系统状态的变化,分析系统性能。最后给出了一个建模与仿真实例。实例表明,基于可执行规格说明建模和仿真方法是研究维修机构运行的有效工具。     

大规模定制模式产品定制程度分析

针对大规模定制的定制程度进行分析,讨论定制程度、定制产品与标准产品价格差与市场需求、厂商利润之间的关系.首先,建立定制产品、标准产品和总产品的需求函数以及厂商利润函数;其次,讨论定制程度和定制产品与标准产品的价格差对市场总需求的影响;再次,考虑企业以销定产的情况下,根据厂商利润最大化原则确定产品的定制程度和价格差;最后,给出一个简单的示例加以说明.     

浅谈我国民事诉讼证据制度存在的问题和缺陷

民事诉讼证据制度是我国民事诉讼制度的重要组成部分，是民事诉讼审判活动的前提和核心。文章从三个方面分析我国民事诉讼证据制度存在的问题，进一步阐述其缺陷的弊端，找出根源，为民事诉讼证据制度改革提供理论依据。     

Effect of taurine on mitogen response of human lymphocytes

Taurine selectively inhibits the phytohemagglutinin-stimulated incorporation of 3H-thymidine by human cultured lymphocytes (50% inhibition by 12.5 mM taurine). Decreasing effects of taurine on Na-K ATPase activity calcium accumulation by lymphocytes might be responsible for its action on cell proliferation.