新型迷宫式气锚及其应用

新型迷宫式气锚将重力分离原理和离心分离原理有机地结合在一起，其基本型气锚主要由上、下两级组成。上级为离心式螺旋气锚，下级为重力分离式和离心分离式综合气锚，可使油气流经同一长度锚筒时，达到双倍的分离效果。可根据油井气量的大小（气液比值）组成任意级数，实现油气的高效分离。还可对低产能井、沉没度易出现负值的油井进行油气分离，维持油井一定时间的生产。现场28口井的应用表明，新型迷宫式气锚油气分离效果理想，能有效地提高泵效，平均泵效由原来的28．9％提高到43．8％。     

直缝焊管机组生产冷弯型钢产品初探

主要介绍了φ２１９直缝焊管机组生产高速公路护栏 成型原理、工艺布置、变形方式、变形图和轧辊设计。     

TMS320 F206定点DSP芯片开发实践

以TMS320F206为例,着重探讨了DSP系统开发过程中的硬件设计与调试、软件设计中的流水线冲突、等待状态设置以及如何利用闪速存储器等相关问题.     

钻井过程中硫化氢的处理工艺

目的：防止钻井过程中出现的硫化氢对人身安全和钻具造成危害。方法：分析氢脆破坏机理和处理硫化氢的化学原理。结果：提出了处理硫化氢的关键技术，并结合塔中162井的实钻经验，总结出了钻井过程中对硫化氢的几点认识。结论：提高泥浆pH值、加入除硫剂及提高泥浆密度等措施是钻井过程中处理硫化氢的关键技术，从而有利于富含硫化氢的灰岩、白云岩等裂缝性油气藏的钻井生产。     

带有外界约束的人口扩散系统的最优出生率控制

本文考虑单边约束的依赖于年龄的人口扩散系统，讨论其最优出生率（边界）控制，得到其最优控制的存在性的必要条件。     

导弹引信动态数据存储仪的研制

本文提供了适用于导弹滑轨与机载试验引信动态数据测试的一种大容量存储测试系统:导弹引信动态数据存储仪,论文论述了系统的构成,工作原理、工作状态图、电路设计及使用存储测试系统在导弹滑轨及特定机载测试环境下的必要性及优越性,该仪器在存储测试系统中首次采用了准静态存储器658512,使存储测试仪的存储容量较先前有了提高,文中阐述了该芯片的使用方法,由于该芯片在出现时间较晚,其使用方法在一股资料中较少涉及,希望本文能起到抛砖引玉的作用。     

Distributed memory systems for simulating artificial neural networks

In executing tasks involving intelligent information processing, the human brain performs better than the digital computer. The human brain derives its power from a large number [O(10¹¹)] of neurons which are interconnected by a dense interconnection network [O(10⁵) connections per neuron]. Artificial neural network (ANN) paradigms adopt the structure of the brain to try to emulate the intelligent information processing methods of the brain. ANN techniques are being employed to solve problems in areas such as pattern recognition, and robotic processing. Simulation of ANNs involves implementation of large number of neurons and a massive interconnection network. In this paper, we discuss various simulation models of ANNs and their implementation on distributed memory systems. Our investigations reveal that communication-efficient networks of distributed memory systems perform better than other topologies in implementing ANNs.     

离散Hopfield神经网络和联想记忆的开关电流技术实现

研究了离散Ｈｏｐｆｉｅｌｄ神经网络（ＤＨＮＮ）和联想记忆神经网络的开关电流技术实现，利用多权输入跨导，开关电流延迟器（ＳＩＤ）和可编程电流比较器（ＰＣＣ）实现了离散Ｈｏｐｉｅｌｄ神经网络，并提出了利用离散Ｈｏｐｆｉｅｌｄ神经网络实现自联想记忆时相应的开关电流电路，所提出了开关电流神经网络适宜于超大规模集成，能在低电压（如３．３Ｖ）下工作。     

Drugs, memory, and metamemory: A dose-effect study with lorazepam and scopolamine.

This experiment was designed to use the graded dose-related amnesia produced by the benzodiazepine lorazepam (1.0, 2.0 mg/70 kg, oral) and the anticholinergic scopolamine (0.3, 0.6 mg/70 kg, subcutaneous) as a tool to explore the cognitive and neurochemical mechanisms underlying metamemory in the judgment of learning paradigm, with a placebo-controlled independent groups design in healthy volunteers (n=12/group). Results provide evidence for a pharmacological dissociation between effects on memory versus metamemory (relative accuracy of item-by-item monitoring) across a range of levels of memory performance and suggest that the drugs selectively impair those aspects of metamnemonic monitoring that require participants' awareness of their overall current state of functioning (absolute accuracy of prospective item-by-item monitoring, prospective global monitoring) but not those that rely solely on assessment of individual item characteristics (relative accuracy of item-by-item monitoring). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

引黄五座泵站火灾自动报警及联动控制系统

介绍了引黄工程五座泵站的火灾自动报警系统的组成及功能，对泵站的火灾探测系统、报警系统、联动控制系统、灭火系统、控制台等原理进行了详细说明，供同行参考借鉴。