LS SIMD微处理器中的三组指令并发执行的设计

文章介绍了LS SIMD微处理器中实现三组指令并发执行的可能性和必要性，分析了三组指令并发执行给流水线带来的影响，并讨论了控制逻辑对三级指令并发执行的控制及其实现形式。     

微控制器与嵌入式RISC处理器的发展现状

综述了新一代微控制器与嵌入式RISC处理器的主要特点和发展方向；详细介绍了目前国内外最流行的不同字长的系列机种、结构特点、专有特性及系统应用等；最后预测了它们的世界销售市场与国内发展前景。     

蜡晶改进剂对润滑油馏分中蜡组分结晶控制作用的研究

抚顺石油一厂通过大量试验和溶剂脱蜡装置的连续生产证明:加工减二线,套管易上压,滤机上蜡饼泡松易堆蜡,应选用合适的改进剂以控制蜡晶生成树枝状;减四、五线重馏分蜡晶细密,套管不易上压,滤机易失效,应选用和适当加入合适的改进剂以增大聚集状晶体粒度;减三线蜡晶粒度大,为套管上压周期较长,滤机上蜡饼通透性好,滤速快,可根据需要决定是否使用改进剂。提出了针对不同润滑油馏分中不同蜡晶型选用合适的蜡晶改进剂可以相应解决不同馏分的生产难点,提高处理能力,改善产品质量。     

PIC单片机在激光电源中的应用研究

论述了单片机控制激光电源的原理，提出了产生PWM控制的基本思想及整个控制系统的硬件组成和软件设计方法。     

液动旋冲接头冲击功测试方法研究

液动旋冲接头性能参数是旋冲接头设计的主要依据之一，如何对液动旋冲接头的参数进行检测是非常重要的工作。在分析和比较了测试液动旋冲接头性能参数各种方法的基础上，选择了冲击力法来进行破岩液动旋冲接头的性能参数测试，以YD系列测力传感器为检测元件，建立了一套比较完善的自动检测系统。分析了影响单次冲击功测试的因素，得出了测试旋冲接头的性能参数的影响规律。     

可编程控制器在捆扎机自动控制中的应用

介绍了一种用可编程控制器（PLC）实现捆扎机自动控制的设计方案，详细地介绍了设计过程，给出了完整的程序流程图和部分控制程序。     

部件试验模态综合的简便方法

本文将一种基于完备模态基的模态综合技术应用于子结构的试验模态综合,获得成功。这种半试验半理论的模态综合方法是一种较为简便的、要求试验工作量较小的试验模态综合法,因为它只要求测量子结构的振动模态和频率即可。数值仿真结果表明,这种简便的试验模态综合法是行之有效的。     

The hierarchies of knowledge and the mathematics of discovery

Rather than attempting to characterize a relation of confirmation between evidence and theory, epistemology might better consider which methods of forming conjectures from evidence, or of altering beliefs in the light of evidence, are most reliable for getting to the truth. A logical framework for such a study was constructed in the early 1960s by E. Mark Gold and Hilary Putnam. This essay describes some of the results that have been obtained in that framework and their significance for philosophy of science, artificial intelligence, and for normative epistemology when truth is relative.I am indebted to Kevin Kelly for several years of happy conversation from which the perspective and views of this paper grew, for comments on a draft of the paper, and for constructing some of the illustrations. A fellowship from the John Simon Guggenheim Memorial Foundation provided the liberty to write this paper. It was first presented in the Turing Colloquium, 1990.     

大连电视台分量电视车视频系统设计特点

本文介绍亚州第一台模拟分量电视车视频系统的设计思想,比较详细地阐述了该车的各种功能,总结了不同于复合电视车的新特点。     

Bulk growth of Hg0.8Cd0.2Te single crystals by a combined CVT-seeding technique

The growth of high quality Hg_0.8Cd_0.2Te bulk single crystals by CVT, combined with an in-situ seeding technique, is reported here for the first time. For this purpose, a temperature difference of 590° → 540° C with a gradient of 40°-50° C/cm at the solid-vapor interface, and about 0.1 atm of HgI₂ as a transport agent, were employed. The bulk crystals have the expected stoichiometry and compositional homogeneity. Etch pit densities of 10⁴-10⁵ cm⁻² on the (111) face and hitherto unreported etch pits on the (100) face were observed in this work. Possible origins of the sub-grain structure are discussed.